Riders rolled out on Saturday morning for the 2025 MCBC Dirt Fondo, an unforgettable day of riding, community, and reflection across the scenic trails of Marin. Riders chose between 24-, 32-, and 45-mile route options, all of which featured epic views, challenging climbs, and fast, flowing descents through some of Marin’s most iconic open spaces.
Riders on the 45-mile course faced more than 6,000 feet of climbing, with expansive views stretching from the Bay to the Pacific. All routes were fully supported with stocked rest stops and on-course mechanical help, allowing riders to focus on the ride, the community, and the cause.
At the finish line, riders were welcomed back with cold drinks, sandwiches, and well-earned high-fives. Conversations lingered over shared efforts and new friendships.
Funds raised from this year’s Dirt Fondo will support MCBC’s off-road program, helping expand and maintain Marin’s trail network, create safe connections for riders of all ages and abilities, and advocate for policies that prioritize access, conservation, and sustainability.
This year’s event was held in memory of Chris Brignetti, a beloved coach, mentor, and friend who was tragically killed while biking in Terra Linda earlier this summer. His deep connection to the mountain biking community was evident in the energy and camaraderie that carried through every mile of the ride.
MCBC extends a huge thank you to the volunteers, sponsors, and riders who made this year’s Dirt Fondo a true celebration of Marin’s off-road cycling community and a powerful tribute to a life lost too soon. We ride for Chris. We ride for safer streets. And we ride for the joy and freedom that brought us all here.
Save the Date!
Dirt Fondo returns on Saturday, August 15, 2026. We can’t wait to do it all over again with you!
Photos from the 2025. Dirt Fondo
Want to see more? Head to our Google Photos album.
Thank you to all our sponsors!
We’re beyond grateful to the sponsors and partners who helped power this ride:
Mike’s Bikes, JAMBAR, Dolan Law, and Sports Basement for keeping you ride-ready and energized at the rest stops.
Relevant Wealth, Wonder Juice, Spare the Air, and Dr. Wagstaff for their financial and community support.
Vehicle SF and MarinDad for their creative event support and for hitting the trails with you!
In-kind support from GU, OSMO, Best Day Brewing, Sierra Nevada, Golden Gate Market, Patagonia Provisions, Velocio, and Every Man Jack added even more enjoyment to the day.
Thank you for such an unforgettable day. We couldn’t do it without your support!
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