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...


Carlsbad: Veterans Memorial Park Public Meeting

Veterans Memorial Park Input

SDMBA requests that individuals interested in reviewing input and providing more to the City of Carlsbad attend this meeting. Our goal i...


Trail Work: Big Laguna Trail/Upper Noble

The heavy winter rains have allowed the brush to grow back with a vengeance.  We need your help to cut it back.  By putting the trailwork time in now sets you up for some...

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!