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Best of the Bay Double Century

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Our event includes an official CTC double century as well as a single century option. Both rides start and finish in Castro Valley, California. Our double century route has three segments on which we include an experience filled with many of the best and most memorable cycling roads offered in the San Francisco Bay Area.

How to enter the Best of the Bay Double Century

  1. Double Century

    Bike 198mi
  2. Century

    Bike 104mi

Best of the Bay Double Century routes

The BEST OF THE BAY Double Century can be broken down into the following three segments:

  • A 55-mile rural and scenic trip from Castro Valley through the East Bay hills, up to Grizzly Peak and down the other side, and returning through those hills to our headquarters in Castro Valley.
  • A 53-mile ride from Castro Valley to Mt. Diablo, climbing up the South Gate road, descending the same road, and followed by a gentle ride up Bollinger Canyon to our lunch stop at Las Trampas Regional Wilderness.
  • A 90-mile ramble south on Bollinger Canyon Road, San Ramon Valley Blvd., and Foothill Rd. to the Sunol-Ohlone Regional Park rest stop. The route then heads through Pleasanton, and continues east through the Livermore vineyards, and north on Collier Canyon towards Mt. Diablo. This time you won’t climb Mt. Diablo, but cycle past it to Danville, before heading south to Dublin, and finally descend to the finish in Castro Valley.

Event Details


What if it rains?

The rides will take place rain or shine, and will not be rescheduled.

BOB double century riders can optionally choose to ride the BOB century plus route. However, CTC credit will not be given for the BOB century plus route, and there will be no refunds.

Should I bring lights?

BOB double century: Lights are mandatory for before sunrise (7:04 am) and sunset (6:50 pm).

BOB century: Lights are mandatory for before sunrise (7:04 am) and sunset (6:50 pm).

Will the routes be marked?

Both routes will include road marking and/or signs. It is possible that we will use human directionals, when appropriate.

Best of the Bay Double Century weather forecast

Clear throughout the day.

Predicted highs
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