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


SDMBA Advocacy Committee Meeting

Monthly SDMBA Advocacy Committee meetings are generally on the 1st Monday of the month, 6:00 pm to 8:00 pm.

The Advocacy Committee is focused on presenting opportuni...


Archipelago Ride 2018

Update 2/13/2018: Arch Ride 2018 is SOLD OUT.  Thanks to all our members who signed up early.  Start climbing!  


Trail Work: Laguna/BLT

Join us for some trail rehab near the Sunset Trail Head/Mile Marker 19 on sunrise highway at Mount Laguna. 

Map Link:

News Feed

City of San Diego Approves Black Widow Trail Project at Black Mountain

March 14, 2018

Final approval for improvements given by the City of San Diego for Black Widow Trail.

Board Member Opening: Treasurer

February 27, 2018

Seeking a treasurer to join the SDMBA Board of Directors

Arch Ride 2018 SOLD OUT

February 13, 2018

Thanks to our members who signed up early! We are SOLD OUT. Looking forward to the best Arch Ride ever on 4/7/2018! Thanks