Improving trail access for mountain biking in

San Diego County since 1994

Over 1500 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


Take a Kid Mountain Biking Day

Take a Kid Mountain Biking is BACK!  

Registration now open - FREE!


3rd Annual SDMBA Mount Laguna Trail Fest

Registration is OPEN. 


Check out our Trail Fest FAQ's HERE

Join us for a lively yet intimate...


Board Meeting - Virtual

The monthly Board Meetings are generally held on the 3rd Wednesday of every month virtually via Zoom. 

Board meetings are open to the public - please email info...

News Feed


June 8, 2021

Donate To Win $4,000 Towards the Canyon Bike of Your Dreams

Announcing Double Header Weekend of Riding, Camping and Fun at Two Separate Events in October

May 27, 2021

World-class riding, top-notch entertainment, camping and philanthropic fun – get ready because this October will offer the single greatest weeke...