We are pleased to announce that the 42nd Mt. Diablo Challenge Ride will be held on Sunday, October 5, 2025​

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The 11.2-mile, individually timed ride climbs 3,249 feet to the summit of Mt. Diablo starting up South Gate Road. Mt. Diablo is one of the highest peaks in the San Francisco Bay Area, with views of the Farallon Islands and the Sierras. The road is closed for safety and more than 800 cyclists will ride to the summit. The ride welcomes all ages, abilities, teams, and bicycle types. It will be a once-a-year opportunity to enjoy riding the mountain without cars. Everyone celebrates after the ride with free BBQ, prizes, awards, and live music. All registrants receive a complimentary t-shirt to commemorate the event. You can also purchase a jersey by clicking here: Come participate in this epic ride that provides breathtaking scenery and test your climbing ability. You can register for the event here:

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Early-bird pricing ends on August 31st, so make sure to register early and take advantage of the lower pricing.