Dirt Fondo 2024 Mt. Tam Epic

Thanks to everyone who came out to the 2023 MCBC Dirt Fondo on July 22, 2023!

Check out photos from the day here!

Thanks to our volunteer photographer, Rory Stamp for some great photos along the route. Check them out here.

Dirt Fondo 2024

Saturday, July 20, 2024


Receive an early-bird discount when you register for next year’s 2024 Dirt Fondo by August 8, 2023! Save $25 off your registration. The discount code will be applied before you complete payment.


Dirt Fondo MTB Riders

MCBC 2024 DIRT FONDO – DEPARTS FROM The Marin Headlands, Saturday, July 20!

The 12th annual MCBC Dirt Fondo returns for another year of outdoor off-road adventure! Join us on Saturday, July 20, 2024, 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 20, 2024 (soft start between 6:30 a.m. and 8:00 a.m.)

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

While the Dirt Fondo started 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 a.m. and 8:00 a.m. on Saturday, July 20. 2024. 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

Volunteers Needed!

Can’t ride the Dirt Fondo, but want to support the cause? CLICK HERE to sign up to volunteer.

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


Bicycle Law Cross Infestation

December 3 @ 8:30 am - 3:30 pm
Stafford Lake Park, 3549 Novato Blvd
Novato, CA 94947
Team Roaring Mouse stafford Lake Race Promo

Join the Bicycle Law Cross Infestation presented by Team Roaring Mouse on December 3, 2023 at Stafford Lake Park in […]

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