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.

Got Trail Work?  We do!  Volunteers needed.  Check all opportunities on our Event Calendar.  

Events Feed


2019 SDMBA Photo Contest

Join SDMBA and its sponsors including Cal Coast Bicycles for an evening of free pizza, Sierra Nevada beer, and mountain bike stoke. Stop by to enter in your action shots, enjoy goo...


Trail Maintenance: Indian Creek at Champagne Pass

So we've been banging the drum about how awesome this area is to ride! We will be brushing back the Indian Creek Trail near and west of Champagne Pass. If you've never been on this...


Christmas in the Valley - Kids Bike Skills Course

SDMBA Kids’ Bike Course 

Saturday, December 8th, 10:00 am to 3:00 pm
Location: Christmas in the Valley - Bates Nut Farm 15954 Woods Valley Road

News Feed

SDMBA partners with California Mountain Biking Coalition

November 22, 2019

California trails need a state wide voice and CAMTB is providing it!

Join or Renew by October 31!

September 6, 2019

Win an Ibis Carbon Wheel Set
Proud member of the California Mountain Biking Coalition  www.CAMTB.org