2022 Grizzly Peak Century


A bit longer than a metric century, the 75 mile (actually about 76 mile) course with about 6,000 feet of climbing is our most popular route. From the start at Campolindo High School it climbs the east side of the Oakland-Berkeley hills via Pinehurst Road, then follows the ridge up and over Grizzly Peak and into Tilden Park to the rest stop at Island Picnic Area. It then drops down alongside San Pablo Reservoir and heads north to the edge of the Bay and the Carquinez Strait to the rest stop at Crockett. From there it climbs McEwen Road for a run down into Franklin Canyon and Alhambra Valley, then over Pig Farm Hill and through the hills around Briones Reservoir to the rest stop at Briones Regional Park. Finally, relatively easy riding on Moraga Way and Moraga Road takes you back to the start for the post-ride meal.

Alternative Car-Free Start

If you use our car-free start at Island Picnic Area, just join the regular route and you will eventually get to Campolindo High School where the barbeque takes place. Enjoy your meal, then ride the 13+ miles back past Island (which will be long since closed), or deviate from the course at whatever point is best for your return trip home. Use the directions on the start of the cue sheet if you need help.

Tricky Bits

At mile 3.1 there is a bridge with one-way alternating traffic controlled by a signal. Use caution and wait for the green.

At mile 4.4 all riders turn right onto Pinehurst Road. The yellow markings on the road will say GPC AM with an arrow to the right. Do not be confused by the marks that say GPC PM, which point to the left. Those are for the full century riders on the afternoon loop.

At mile 31.2 turn left onto Alhambra Valley Road. The 50 mile route goes right here, so be careful not to follow them.

At mile 41.4 in Crockett turn left onto 2nd Ave. The rest stop has moved to a new location in Crockett.

At mile 44.8 turn sharply right onto the very steep McEwen Road. Gear down before the turn!

At mile 61.4 turn left into Briones Park to go to the rest stop. It is on a fast descent, so easy to miss.

At mile 72.7 continue straight. At this point, the Full Century riders will turn right, so there will be additional road markings for that route. Be carefull not to follow riders who are not on your route.


Below is a tentative map. You will receive a final map at registration. Note that you can click on View full route to see more details and to export files suitable for importing into your GPS device.

Cue Sheet

We have a tentative cue sheet available now. You will receive a final cue sheet at registration.