Advocating for Trails and Mountain Biking in San Diego Since 1994

Over 1100 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


APX Purpose Pedal Challange

Welcome back to the third annual APX Purpose Pedal and Trail Run! Event will take place in one of San Diego’s most scenic parks that is Daley Ranch in the city of Esc...


Mountain Bike Ride and SportRX Sunglass Social Hour

Join San Diego Mountain Biking Association and SportRx for a fun, FREE mountain bike ride in the tri-canyon area followed by some chill time at SportRX enjoying post ride refreshme...


Ride with A Ranger #3

Mountain Bike Ride with a MTRP Park Ranger and SDMBA volunteers! 
This is the last ride in a series of 3 geared for intermediate riders. Arrive around 8:30 a.m. and hav...

News Feed

Call to Action: Calaveras Carlsbad Alert

May 22, 2017

We need your help!

Tees for Trails - Club Ride SDMBA Shirts - Pre-Order Now

May 10, 2017

SDMBA is partnering with Club Ride Apparel to offer custom Tees for Trails shirts! 50% of each purchase comes back to SDMBA to support our program...