Advocating for Trails and Mountain Biking in San Diego Since 1994

Over 1100 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


SDMBA Advocacy Committee Meeting

*Note: January's meeting pushed back because of the New Year's Holiday.

Monthly SDMBA Advocacy Committee meetings are generally on the 1st Monday of the month, 6:00 ...


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...


Winter Brew Fest 2018

We are super stoked about our NEW LOCATION at the Fleet Science Center in Balboa Park!
They will be showcasing a MythBusters exhibit and rumors have it that cast members of ...

News Feed

Sustainable Trails Coalition Makes Major Progress

December 16, 2017

Information on recent developments on HR 1349

SDMBA Response to IMBA's Lack of Support for HR 1349

December 7, 2017

SDMBA is extremely disappointed in IMBA's rejection of the Sustainable Trails Coalition and HR 1349.

Call for Board Member applicants

December 5, 2017

SDMBA is currently seeking Board Member applicants through 12/31/2017. Please contact for more information.