Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This third ride in the 2026 Century Prep Series leaves from Orinda BART. Ride north on Camino Pablo/San Pablo Dam Road, then clockwise around the hills known as The Three Bears, then counterclockwise on the little-traveled El Toyonal loop. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

https://ridewithgps.com/routes/29586117

Please register before 8 pm the night before. I can offer a carpool ride from Berkeley. The group will wait at mile 6.7 in front of Marin Country Day School and at mile 16.2 after the bike path at the end barrier on West Shore Road. Start and finish at the Mill Valley Safety Building.

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Join Wednesday group for a Paradise drive loop followed by Birthday celebration for Bev French with special guests !

Weather forecast is for warm to hot temperatures so let's stay near the water with a Paradise drive loop from Blackie's Pasture in Tiburon with extension into Larkspur. At completion of the ride, we will enjoy leisurely lunch at the park near Blackies statue with cookies provided by Bev. Opportunity to also visit with some Wed riders who have been unable to join us for rides - Jim, Jill, Melissa, Frank and maybe others. Bring lunch and smiles and enjoy company of other Wed riders and celebrate Bev's birthday.

Cue sheet/ridewithgps to come

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Please join us for the weekly South Park repeats ride. This is a short ride but with a steep climb! We’ll head up Virginia St and Spruce to Spruce/Grizzly Peak for our first regroup, then head out along Wildcat Canyon to South Park Rd. From there, we’ll climb South Park, descend, and climb it again as many times as the mood strikes us (usually two times is enough, but individual riders can shorten or lengthen the ride as desired). South Park is closed to cars starting November 1st, which makes it perfect for winter riding. If we complete two round trip ascents up South Park then back to N Berkeley Bart, expect about 2,300 feet of elevation gain. This is a great way to stay in shape over the winter!
NOTE: This is a night ride. Come with bright front and rear lights (and make sure they work). 20% chance or greater of rain cancels the ride. Please contact ride leaders with any questions.
https://ridewithgps.com/routes/48934095

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Individual Time Trial
Come test your fitness level and get in a great workout by riding the Bears Loop as a time trial. In the ITT, each person rides at his/her own pace (no drafting) to see how fast the Bears Loop can be completed. It’s a great format for pushing yourself to see how fast you can ride the loop.

Pace Group Ride
Ride the Bears Loop at your normal pace to use it to determine your GPC pace (https://www.grizz.org/rides/ratings.php). Or use this ride to train at a particular pace for an upcoming event.

The first rider is off at 10:01 and a rider a minute after that. For the GPC Pace ride, a pace group can start together, or each rider can rider on their own as the ITT riders do. (Regardless of the format, each rider is timed individually.)

Rider finishing times are usually shared in the ride report email to the club. While it is nice to see what times folks ride, reporting of rider times is optional. Also, the ITT is open to both members and non-members; no need to join as in the past.

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This fourth ride in the 2026 Century Prep Series leaves from Orinda BART. Ride Pinehurst, Skyline then Grizzly Peak, following the route of the GPC century. Then drop down Wildcat and return to Orinda BART. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

Let's get stoked for the GPC Gravel Century at Shell Ridge! Beginner to intermediate paced ride with a few moderately technical trails. Appropriate for gravel and MTB tires.

https://ridewithgps.com/routes/54098931

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Miles and smiles, hills and thrills, lunches and lattes. This listing will be updated when the route and leader have been determined, usually by Monday evening. Meet at 10:00 am (usually) for this ride. Rain cancels. You can also join our web forum and check the forum archives for the current information.

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Come help Jim Scott celebrate his 81st birthday, 40+ years as a GPC member and almost 63 years of road bike riding.

Join Jim and Jessica Jensen for a ride along the Bay Trail, through Point Richmond and over the San Rafael Bridge for lunch in the Larkspur Shopping center. There will be several regroups, since Jim isn't as fast as he used to be.

Route: https://ridewithgps.com/routes/38019355

Spring mixed terrain gravel intro (25/75 gravel/road). This essentially flat Richmond shoreline cruise includes an optional Wildcat Creek Marsh landfill loop (if the week is dry-ish) and pivots at the scenic Point Pinole Regional Shoreline trails. Expect a variety of wetlands, shorebirds, urban-industrial scapes, and test out gravel riding in the new year!

Strava Route

See nearly all that Solvang has to offer in one big loop. See Longhorns, Llamas, Buffalo and Magpies! This route has lots of slightly downhill stretches, but the uphills are not slight! Cat Canyon Road is incredibly rough! We will have lunch in Los Alamos, before tackling the horribly rough Drum Canyon Road, then taking relatively smooth roads back to the start.

Current membership in GPC is expected. A cheerful adventurous attitude is encouraged. The route is listed above. Load it to your navigation device or print your own cue sheet. There will not be a paper handout. Please pre-register if you would like the leader to keep some track of you; there will not be a paper sign in sheet at the ride start. Two full water bottles and some nutrition make good sense. The first 40 miles does not have easy to get water. The standards listed in the Rider Guidelines on our website always apply.

See the best of Solvang and get to lunch quicker. Miss the roughest climb that I have ever done, Cat Canyon. After lunch, we tackle the second roughest road in the area. The even shorter ride possibility is to turn around at Fess Parker Winery, and return nearly the same way (26 miles).

A cheerful adventurous attitude is encouraged. Strong navigation skills or riding with a buddy who knows the route can be very helpful. Print your own cue sheet if needed. Please sign in online if you would like the leader to keep some track of you; there will not be a paper sign in sheet at the ride start. Two full water bottles and some nutrition make good sense. The standards listed in the Rider Guidelines on our website always apply.

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This fifth ride in the 2026 Century Prep Series leaves from Orinda BART. Ride north on Camino Pablo, climb Wildcat Canyon, Grizzly Peak Blvd, Skyline Blvd, descend Redwood Road, then return via Pinehurst, Canyon, Moraga Way. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

Leisurely but challenging ride from the peninsula to the coast and back. Hopefully there will be clear skies, but it's always possible fog will take over on the coast. Several highlights: Sweeney Ridge, San Pedro Mountain (AKA Planet of the Apes), Gray Whale Cove Trail, Coastal Trail, Purisima Creek Trail. About a third of this ride is unpaved. It'll be more comfortable with wider tires (35 mm+) but it is entirely doable on a road bike if you're willing to deal with some bumpiness. Bring spare tube and flat-fixing tools. We'll be taking Caltrain, so be prepared with Clipper Card. Also bring enough water to last about 3 hours as there are very few potential water options after lunch.

Part 1: From San Bruno BART, start immediately climbing up Sneath Lane. This will gradually get steeper and eventually turn into Sneath Lane Trail (paved). We will continue until reaching the top of Sweeney Ridge. Loop around Sweeney Ridge and down Bacquiano Trail-this is really the only somewhat technical descent (narrow and windy dirt).

Part 2: Next challenge is San Pedro Mountain Road, formerly open to cars but maintenance lapsed and now it's a an eroded semi-maintained hiking/biking trail. There are a few rocky sections and a couple of sandy areas on the descent so be careful. Optional bathroom stop before looping out to Highway 1 on Gray Whale Cove Trail.

Part 3: Most of the next 10 miles are paved, a couple miles on Highway 1 before taking side roads and trails to Half Moon Bay. Lunch in Half Moon Bay-there are a few nearby options plus Starbucks. This is about the halfway point, but also the last real water and full bathroom until Woodside. If for whatever reason you're not feeling up to the rest of the ride, this is also the last real bail opportunity.

Part 4: From Half Moon Bay, we'll take the Coastal Trail to the end (very scenic, mostly unpaved route, secluded from traffic and right near the ocean), very briefly go onto Highway 1, and ultimately take Purisima Creek Road to Purisima Creek Trail, a fairly steep but well graded dirt climb. Then it's just descending into Woodside and Redwood City to Caltrain. If you want to go all the way to BART, you can take Cañada Road to Sawyer Camp Trail but that's on your own. Caltrain runs every half hour, and there is a discounted transfer between Caltrain and BART. If you end up driving to the start, San Bruno Caltrain is under a mile from San Bruno BART.

Route: https://ridewithgps.com/routes/53765102

A remote road to the Coast. So remote, a full sized mountain lion slowly crossed the road right in front of Brian on a recent trip (or so he says). No water or bathrooms at the start which is a wide dirt pullout.

This is a beautiful route with just one hill, each way with very little traffic. Lunch is at the store at Jalama Beach Campground (water, restrooms) where you can get a famous Jalama Beach Burger. Or maybe you can find something healthier on the menu.

Current membership in GPC is expected. A cheerful adventurous attitude is encouraged. The route is listed above. Load it to your navigation device or print your own cue sheet. There will not be a paper handout. Please pre-register if you would like the leader to keep some track of you; there will not be a paper sign in sheet at the ride start. The standards listed in the Rider Guidelines on our website always apply.

Join us for this classic route to Jalama Beach. This 53 mile version requires a car shuttle, which we arrange at Happy Hour the night before. Get a lift out to the start on Jalama Road with others who are doing Just Jalama, then ride to the beach. After lunch we ride all the way back to Solvang. There are several other options which can be discussed at Happy Hour. A full out-and-back from Solvang would be about 77 miles. The shortest version (see listing for Just Jalama) is an out and back to Jalama Beach from Highway 1, and it still has plenty of climbing.

Current membership in GPC is expected. A cheerful adventurous attitude is encouraged. The route is listed above. Load it to your navigation device or print your own cue sheet. There will not be a paper handout. Please pre-register if you would like the leader to keep some track of you; there will not be a paper sign in sheet at the ride start. Two full water bottles and some nutrition make good sense. The standards listed in the Rider Guidelines on our website always apply.

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

Today is our day on the mountain. I've listed the traditional loop ride counterclockwise, but we may need to be flexible and substitute the (even steeper) west side up and back or something else depending on weather and road conditions. We'll finalize the night before at our cocktail hour. The loop has idyllic country roads for the first and last 15 miles, with a steep climb over Mt Fig in the middle and an uncomfortably steep descent on some poor pavement. There is a short section of unpaved road near the start of the big climb, and a slippery stream crossing to be very careful about. Lunch at Panino in Los Olivos, but that is very late in the ride so bring snacks. There is no reliable water available until lunch, so bring plenty.

Current membership in GPC is expected. A cheerful adventurous attitude is encouraged. Load the route into your navigation device or print your own cue sheet. Please pre-register if you would like the leader to keep some track of you.

Starting from Plenty on Bell in Los Alamos, experience the incredible Cat Canyon climb without all of the extra mileage. Cross over Hwy 101, toward Alisos Canyon Road, do an incredibly bumpy frontage road, Ride the smooth and serene Alisos canyon, then follow Foxen Canyon north toward your destiny. Cat Canyon is the bumpiest road that I know of, topped off by grades occasionally over 10%! You'll love it! After this very hard one mile climb, you are treated to many miles of downhill, nearly making it all the way back to Los Alamos. Just before Los Alamos you need to cross highway 101, but you can do it in two parts, then easy cruising back to lunch at Plenty on Bell.

The RWGPS route can be found here: https://ridewithgps.com/routes/52636451. It will be moved to the route library and be linked properly.

Helmets, cheerful attitude, etc. Be ready to ride at 9:45. It starts off easy.

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Join us for a friendly TM paced paved ride. We meet at the plaza near the water fountain by Spruce and Grizzly Peak. This is an out and back to Chabot Space and Science Center. We'll head out along Grizzly Peak Blvd or Wildcat and up South Park. Then, take Skyline to the Science Center driveway where we'll climb the road to Chabot Space and Science Center. Brief regroups are at the top of South Park, Grizzly Peak at Skyline, and Chabot Science Center. Please carry enough food and water for the entire ride. Please pre-register by 3:30PM day of ride. Rain, bad AQI, or no riders pre-registering might cancel the ride. E-bikes are welcome on this ride.

The pace is TM (approx. 16mph solo effort on flats, up to 3w/kg climbing)

https://ridewithgps.com/routes/45778398

Miles and smiles, hills and thrills, lunches and lattes. This listing will be updated when the route and leader have been determined, usually by Monday evening. Meet at 10:00 am (usually) for this ride. Rain cancels. You can also join our web forum and check the forum archives for the current information.

Note the later start time since we will be driving to get to the start. Accessed on our travel day between Solvang and Paso Robles, Pozo Loop offers up stunning scenery! There is good parking at the Community Park. Bring two full water bottles, as the water at the Ranger Station still says non potable. We will watch the temperatures. We generally eat at "The Porch" restaurant in town after the ride.

A cheerful adventurous attitude is encouraged. Strong navigation skills or riding with a buddy who knows the route can be very helpful. Please sign in online if you would like the leader to keep some track of you; there will not be a paper sign in sheet at the ride start. Two full water bottles and some nutrition makes good sense.

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

This ride will shorten and clean up some previous Tors de Paso. This route will head south over some roller coaster hills on the Eastside, then cross to the Westside and do the entire Vineyard Drive and then return to Paso Robles on Adelaide Road. Excellent water and bathrooms can be found at Tablas Creek Winery (very bike friendly) , at mile 24. Helmets required, rain or high heat may cancel.

RWGPS: https://ridewithgps.com/routes/50160557

This ride starts in San Miguel. Please park across the street from the Mission. This is an out and back to the North American Plate. Just across the fault is the rustic town of Parkfield that serves up a great lunch. There is only one hill on this ride and you hit it both ways. Rain may cancel.

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Meet for an early start with a prompt departure so that if you hurry, you could check out by 11 AM. People really will leave at 8 AM, and it will be cold! We will ride a beautiful loop around the wine country of Paso Robles. I am leading the shorter version, but if you have time, you can extend the standard loop with an additional loop out to Cypress Mountain for a 40 mile ride. Peachy Canyon has one of the nicest, curviest downhills anywhere, and it seems like it never stops, until it makes you climb again and then have even more fun! If you plan on joining us, please let us know in advance, you should attend the happy hour / route planning meeting the night before, or check in with us, so that you are aware of any changes to the route, start time or start location. This is the day that many people will return home, so there often are changes. Bomb cyclones or atmospheric rivers may cancel. Helmets, cheerful attitude, etc.

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This sixth ride in the 2026 Century Prep Series leaves from El Cerrito Del Norte BART. Ride to Pinole, Crockett, then the "walls" McEwen Road, Pig Farm Road, and Hillcrest. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Join us for a friendly TM paced paved ride. We meet at the plaza near the water fountain by Spruce and Grizzly Peak. This is an out and back to Chabot Space and Science Center. We'll head out along Grizzly Peak Blvd or Wildcat and up South Park. Then, take Skyline to the Science Center driveway where we'll climb the road to Chabot Space and Science Center. Brief regroups are at the top of South Park, Grizzly Peak at Skyline, and Chabot Science Center. Please carry enough food and water for the entire ride. Please pre-register by 3:30PM day of ride. Rain, bad AQI, or no riders pre-registering might cancel the ride. E-bikes are welcome on this ride.

The pace is TM (approx. 16mph solo effort on flats, up to 3w/kg climbing)

https://ridewithgps.com/routes/45778398

Miles and smiles, hills and thrills, lunches and lattes. This listing will be updated when the route and leader have been determined, usually by Monday evening. Meet at 10:00 am (usually) for this ride. Rain cancels. You can also join our web forum and check the forum archives for the current information.

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

Join the club's virtual monthly business meeting at 7:00 pm. Optional social time from 6:45 pm to 7:00 pm. Check your email for an announcement with the agenda and details of how to join the meeting.

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This seventh ride in the 2026 Century Prep Series leaves from Pleasant Hill BART. Ride through Clayton and Morgan Territory. Return from Tassajara through Blackhawk and Round Hill, avoiding Danville Blvd and the Iron Horse Trail. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

This variation returns from Tassajara through Blackhawk and Round Hill, avoiding Danville Blvd and the Iron Horse Trail.

Let's get psyched for the GPC Gravel Century at Shell Ridge! Beginner to intermediate paced ride with a few moderately technical trails. Appropriate for gravel and MTB tires. Includes Walnut Creek Sports Basement post-ride stop for snacks (Pending coordination on 4/12 date.)

https://ridewithgps.com/routes/54098931

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Miles and smiles, hills and thrills, lunches and lattes. This listing will be updated when the route and leader have been determined, usually by Monday evening. Meet at 10:00 am (usually) for this ride. Rain cancels. You can also join our web forum and check the forum archives for the current information.

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Individual Time Trial
Come test your fitness level and get in a great workout by riding the Bears Loop as a time trial. In the ITT, each person rides at his/her own pace (no drafting) to see how fast the Bears Loop can be completed. It’s a great format for pushing yourself to see how fast you can ride the loop.

Pace Group Ride
Ride the Bears Loop at your normal pace to use it to determine your GPC pace (https://www.grizz.org/rides/ratings.php). Or use this ride to train at a particular pace for an upcoming event.

The first rider is off at 10:01 and a rider a minute after that. For the GPC Pace ride, a pace group can start together, or each rider can rider on their own as the ITT riders do. (Regardless of the format, each rider is timed individually.)

Rider finishing times are usually shared in the ride report email to the club. While it is nice to see what times folks ride, reporting of rider times is optional. Also, the ITT is open to both members and non-members; no need to join as in the past.

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This eighth ride in the 2026 Century Prep Series leaves from Orinda BART. A loop from Orinda Bart following much of the south loop from the 2025 century plus a portion of the route up Pinehurst to Skyline. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.

Riding the GPC Gravel Century? Join us for a pre-ride of the North Loop of the 100k route.

This ride will be a no drop ride at a T pace. Expect steep descents and some technical single track. Bring water and nutrition. There are restrooms and water along the route. Please download route you your device.

Route:

https://www.strava.com/routes/3463211263531313584

https://ridewithgps.com/routes/54123840

Join us for the Treasure Island lap, starting at the Bay Bridge base of the Alex Zuckermann bike path. This ride features shorter regroups, a faster T-pace, and sparkling city skylines. Expect one short, steep descent and a challenging half-mile climb off the island (7-10% grade). Ride ends with optional food and drinks at Bay Street or Wondrous Brewing Company. Bring lights and warm layers.

Ride with GPS Route

GPC Tuesday is a Brisk paced loop through the Berkeley / Oakland Hills starting at the Reservoir @ Spruce / Grizzly Blvd. Ride is characterized as fast pace lines with close quarters pack riding skills required. The ride has approximately 6 re-groups along the route. (Slower riders do have limited time to arrive at re-group points, however, as wait times are limited to 4-5 minutes.) Route as follows: Grizzly Peak to Skyline pausing at Sibley (riders can join at approximately 6:05 here at top of Tunnel Rd), Skyline to Redwood Rd, turning left on Pinehurst Rd back to Skyline, returning to ride start or peeling off to return home individually. No E-Bikes.

This is the classic Tuesday night workout & skills ride, M-pace. Please read the ride details and route description at http://www.abriz.net/gpc/tues-ride.html. Bring your high energy, your high attention to safety, and your best bike handling and pack riding skills. Repeats every Tuesday through the last week of September. Preregistration is highly encouraged. No flashing lights please. No e-bikes please. Rain or bad AQI cancels. E-mail Mark if any questions.

Miles and smiles, hills and thrills, lunches and lattes. This listing will be updated when the route and leader have been determined, usually by Monday evening. Meet at 10:00 am (usually) for this ride. Rain cancels. You can also join our web forum and check the forum archives for the current information.

The route will vary week to week but we always start at El Cerrito Plaza BART. I have upgraded this ride to TM to better reflect sorts of riders which typically show up. I will continue riding at the same pace that I always have and we will continue to have frequent regroups so don't let the new pace deter you from showing up. Bring warm layers and bright lights to see by. The majority of the dirt sections often up hill or flat, but expect some short bumpy descents in the dark.

This ride will start with the TM pace ride at El Cerrito Plaza BART. This will be a no drop ride good for riders new to gravel riding, training for the GPC Gravel Century, or just want to ride at a more chill pace. It is recommended to have 32mm or bigger tires. Bring warm layers and bright lights to see by. The majority of the dirt sections will be fire roads with two sections of singletrack at the end. We will have regular regroups and there will be an option to skip the singletrack sections at the end of the ride.

https://www.strava.com/routes/3450182025717063070

https://ridewithgps.com/routes/49424972

This weekly ride often tours through West Marin, but sometimes travels to Napa, Sonoma, or Livermore, depending on the season. We have frequent regroups and usually stop for a real lunch, if it is available on the route. This listing will be updated when the route and leader have been determined, usually by Monday evening. Status updates for weather cancellations will also be posted on the schedule.

There is sometimes a faster (more like M pace) group on this ride, but we all come back together at frequent regroups and lunch. Faster riders should feel free to push on after lunch. Just tell the leader first.

Fun group of ~8-10 people every week.

Mixed Terrain loop from Canyon Club Brewery (CCB) via roads and trails

CCB > South Pinehurst > East Ridge (Redwood) > Skyline > The View (Sibley) > Volcano Loop > Wild Dirt (Wilder) > Lost Valley > Mira Shortcut > Moraga Way > CCB

Century Prep Series rides are designed to prepare new and/or veteran cyclists to ride the Grizzly Peak Century. We emphasize riding in a group and start with relatively easy routes. To check out the entire series and for more information see our Century Prep Series webpage. Non-members are welcome on all GPC rides, but please note: Because of insurance requirements, we limit participation in GPC rides by non-members to two (2) GPC rides. After you join us for a couple rides, please join the club. Your membership includes excess medical and accident insurance.

This ninth ride in the 2026 Century Prep Series leaves from Orinda BART. This is the north loop of the century, from Orinda BART, using the Bay Trail through Pinole and Rodeo. Members and nonmembers can all pre-register using the link above to save us time at the start.

This ride is NO DROP. This means nobody will be left behind, no matter their pace or ability. Helmets are required. We look forward to riding with you! Rain cancels. Check this page the day of the ride if weather is dubious.

For all the rides in the Century Prep Series and more information, see our Century Prep Series webpage.