Improving trail access for mountain biking since 1994

Over 1300 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


Trek Ride: Mount Laguna

Road Trip!!!! Come join the SD Trek Girls for a ride in the Lagunas!! The weather is warming up, so let’s head for the mountains.



SDMBA Ride, Meet and Greet

To spice up our summer, we are having a Ride, Meet and Greet at Gravity Heights in place of our regular advocacy meeting.  Monday, August 5   3:30 - 8 p.m.  ...


SDMBA Mount Laguna Trail Fest presented by ZOIC

Save the DATE! 

Registration will be opening in by the end of July.  Email invitations to register will go out to all current members first.  Then reg...

News Feed

Join or Renew by August 31!

June 30, 2019

You could win a Shimano XT M8100 Group!

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!


May 23, 2019

Vote for SDMBA! Voting closes on June 7! Jenson USA is donating the proceeds from their 2019 #keeppedaling hat to the trail association with the m...