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


Rancho Guejito Vineyard Ride - San Pasqual Valley

*This ride originally planned for 1/13 has been rescheduled for 1/27/2019 due to forecast wet conditions.  

Join us for a FREE bike ride starting and finis...


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...


Ride the Rancho

Step back in time and ride through a landscape few have experienced. Explore rolling hills with majestic oaks trees. Ride past adobe ruins over 150 years old and areas untouched by...

News Feed

2019 Archipelago Ride Registration Open NOW!

January 18, 2019

Aloha! Don't miss the tropical adventure that is #archride2019

Archipelago Jerseys now available for pre-order!

January 3, 2019

Get one of these tropical treats in time for springtime fun!

Public Comment: Steel Bridge Staging Area

December 29, 2018

Letters of support needed for the new staging area proposed at the Steel Bridge in Rancho San Diego. Click link for details