As we all continue to work through the challenges that 2020 has delivered to us, we have had to cancel all events including large volunteer trail work days and in person meetings.   We have taken our board and committee meetings and our quartlerly advocacy meetings online.  Our staff has continues to do work safely in the field and on trail advocacy efforts around the county.  We are working with our partners on protocols to get small volunteers back out safely to trail work events.  Stay tuned for opportunities.  

September 2020:  Fire and extreme weather closure updates here: Trail Status page

Improving trail access for mountain biking in San Diego County since 1994

Over 1400 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


How to Survive Mountain Biking - Part 1

Join us for an informative presentation by Dr. Silvia Santiago and April Oertle (Wilderness EMT) who will present the basic things you should know to be prepared for your mountain ...


How to Survive Mountain Biking - Part 2

Join us for a deeper dive into Wilderness Preparedness with Dr. Silvia Santiago and April Oertle (Wilderness EMT) More advanced preparedness for adventures close to home or in the ...

News Feed

USFS seeks public comments on ebike usage

October 1, 2020

Comments due by 10/26/2020

SDMBA requests the City of San Diego Consider Reasonable and Safe Soft Opening of Trails, Parks and Open Spaces

April 17, 2020

Our recommendation is for the City of San Diego to consider and implement a reasonable plan for soft-opening for some parks, trails and open spaces in...

2020 SDMBA Survey OPEN until April 20.

April 15, 2020

Please fill out a short survey that will help us prioritize efforts.