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


Blood Road Movie Screening

Doors 6pm
Film 7pm


Volunteer Appreciation Party

Invitations have been sent out to volunteers who had recorded hours with SDMBA over the past year.  If you did not recieve an invite via email but believe you ...


ZOIC Clothing Warehouse Sale

5611 Palmer Way, Carlsbad
Friday 10 am - 6 pm
Saturday 9 am - 12 pm

-Save up to 70% on men’s, women’s & kids mtb apparel!

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News Feed

SDMBA Renews Partnership with the International Mountain Biking Association

September 12, 2017

New charter agreement strengthens advocacy efforts in California and increases membership impact via joint affiliation in both organizations

Carlsbad Highlands Ecological Reserve Update

August 25, 2017

Advocacy efforts continue at Calaveras

Someone really needed tools!

August 21, 2017

We have been informed by San Dieguito River Park staff that most all the tools have been stolen from the Bike Fixation tool station at the North side ...