Improving trail access for mountain biking since 1994

Over 1300 members have stepped up to help SDMBA make mountain biking better for everyone in San Diego County. SDMBA advocacy volunteers provide a unified voice for trail users in public land use policies favoring sustainable outdoor recreational opportunities. Liaisons, trail builders, and other advocates seek out and build harmonious unified alliances and partnerships with businesses, land managers, and communities. Specialized volunteer-run programs support this mission and further inspire youth to explore and learn about nature and become its future stewards.

Events Feed


City Council Meeting: Mission Trails Master Plan Update

This is a City of San Diego Council meeting On the agenda: approval of the Master Plan Update for Mission Trails Regional Park.

We need trail users to show up and sp...


Board Meeting

The monthly Board Meetings are held on the 3rd Wednesday of every month at Mission Trails Regional Park, Visitor’s Center Library.  
Board meetings are open to th...


Stein Hoisting Contest with Rouleur Brewing

Ladies and gentleman, start training your beer muscles! 💪🍻 On Friday, May 24th at 7pm, we're holding a Stein-hoisting contest with our good friends at Rouleur Brewing Company...

News Feed

...and the winner is...

May 6, 2019

The winner of the Five for the Trail - One for the Grail campaign is Kerry Quakenbush of Los Angeles. Thanks to everyone who donated. $16,350 raised ...

Calavera Trails Advocacy Meeting and Other Efforts

April 17, 2019

Concerned about recent increased access issues at Calavera?

Special Offer for Members! Balance Insurance for Cyclists

January 30, 2019

Balance offers affordable injury insurance for cyclists. It’s like a helmet for your wallet.