Celebrating 25 years of improving trail access for mountain biking in San Diego County

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


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...


SDMBA Mount Laguna Trail Fest presented by ZOIC

Last year was a smashing success and for year two the SDMBA Laguna Trail Fest presented by ZOIC Clothing is growing. Join us for a lively yet intimate gathering of our trail loving...


Advocacy Committee Meeting

Monthly SDMBA Advocacy Committee meetings are generally on the 1st Monday of the month, 6:00 pm to 8:00 pm.

The Advocacy Committee is focused on presenting opportuni...

News Feed

Join or Renew by October 31!

September 6, 2019

Win an Ibis Carbon Wheel Set

And the winner is...

June 2, 2019

The winner of our May Membership Giveaway is Shawn Farrow! Shawn gets a two night stay at Bear Belle Cabins and 4 day passes to Snow Summit!