Dirt Fondo 2023! Mt. Tam Epic

Saturday, July 22, 2023

Thank you to all those who rode the 2022 DIRT FONDO!

Some riders and volunteers shared their photos with us, see them at the Dirt Fondo Photo gallery, and send us yours if you got ‘em!

A big thank you to our volunteer photographer, Bennett Bakke. Check out his photos here!



Dirt Fondo 2023

MCBC 2023 DIRT FONDO – DEPARTS FROM The Marin Headlands, Saturday, July 23

The 11th annual MCBC Dirt Fondo returns for another year of outdoor off-road adventure! Join us on Saturday July 22, 2023, as 300 lucky riders will embark on a 45-mile journey from the Golden Gate to Mt. Tam and back. There is amazing scenery along the whole route and a good mix of trails, fire roads, and tarmac! Friendly faces will greet you at 4 rest stops on the way out as well as on the return and world-class support on course, including marshals, mechanics and SAG.

The day culminates with a post-ride party among the horses at the Presidio Riding Club Stables in the Marin headlands.

When: Saturday, July 22nd (soft start between 6:30 am and 8:00 am)

Where: Rodeo Valley Trailhead at the Presidio Riding Club Stables in the Marin Headlands

While the Dirt Fondo started off as a mountain bike event, run what ya brung (aka Gravel, Cyclocross or Single Speed)!

The classic route takes riders from the Marin Headlands to the top of Mt. Tam and back on a crisscrossing selection of trails and fire roads.

45, 32, and 24 mile options // Post-ride meal // Well-stocked energizer stations // Dirt Fondo Schwag //  Course Marshals & Sweeps // SAG & radio support // Much more…

The ride begins at the Presidio Riding Club stables at 901 Bunker Road in the Marin Headlands with a soft rollout between 6:00 am and 8:00 am on Saturday, July 22. There is ample parking across the street, but please carpool if possible.

45 Mile Routehttps://www.strava.com/routes/2984701028511893140

32 Mile Routehttps://www.strava.com/routes/2984700821142326932

24 Mile Routehttps://www.strava.com/routes/2984700611796093588


Dirt Fondo 2023 Map

Traditional Territory of the Coast Miwok

As you enjoy the trails in Marin, please remember that you are riding within the traditional territory of the Coast Miwok, many of whom are now citizens of the Federated Indians of Graton Rancheria. Please help us acknowledge the Tribe and their continuing legacy as caretakers of their ancestral territory. Do your part to not disrupt the landscape by staying on the trail.

Dirt Fondo FAQs

Can I do these routes on a gravel bike?

All Dirt Fondo routes are planned with mountain and gravel bikes in mind. Upright bars and suspension will have advantages on the trails and rutted fire road segments, but a gravel bike is great for the smoother fire road bits and road segments. Either way, be prepared for some challenges along the way and walk tough sections if it looks too difficult – no one will judge you!

Are e-bikes allowed?

All routes cross multiple parks and e-bike regulations are not consistent from agency to agency. See our stance on e-bikes, and where you can ride them, at https://marinbike.org/resources/e-bike/


Dirt Fondo 2023


2023 Dirt Fondo

July 22
Presidio Riding Club, Bunker Road
Sausalito, CA 94965 United States
Dirt Fdndo 2023

The 11 Year Anniversary of MCBC's Dirt Fondo returns to its in-person outdoor off-road adventure on Saturday July 22, 2023. 300 lucky riders will embark […]

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$150 – $1000

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San Geronimo Golf Course, 5800 Sir Francis Drake Blvd
San Geronimo, CA 94963

Join us for Adventure Revival 2023! Experience a gorgeous gravel ride through the coastal mountains of Marin. Come out in […]

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