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


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...


SD Trek Girls Beginner Friendly Ride

Join the SD Trek Girls for our October Halloween Costume Ride in Rancho Penasquitos. This is a great location for all skill levels! Beginners will explore some creepy singletrack a...


October Advocacy Meeting - Alpine Edition

Join us as we talk trails and current opportunities and issues with our members, local land managers and other trail lovers.  

News Feed

Anderson Truck Trail Information from US Forest Service

October 18, 2017

Update on Anderson Truck Trail

FREE membership with bicycle purchase at TREK Superstores

October 4, 2017

Announcing an Exciting Partnership with Trek Superstores, SDMBA and the San Diego County Bicycle Coalition In an effort to increase the voice of cy...

SDMBA Renews Partnership with the International Mountain Biking Association

September 12, 2017

New charter agreement strengthens advocacy efforts in California and increases membership impact via joint affiliation in both organizations