Your generosity directly supports SDMBA 

 our trail projects and advocacy efforts throughout San Diego County 


Here’s just a short list of what your giving dollars have supported in 2023-24

  • Over 28 miles of trail maintenance activities from Daley Ranch to Penasquitos to Mount Laguna to Chula Vista
  • A two person Professional Trail Crew making amazing progress on challenging projects such as:
    • Repair of the Sycamore Crossing and Wagon Wheel Crossing in Penasquitos
    • Surfacing of the Bradley Bike Park in San Marcos
    • Resurfacing of Sweetwater Bike Park
    • Replacement of bridges in Tecolote Canyon at Balboa Avenue, Tecolote Golf Course, Gonzalez Canyon and others
    • Trail maintenance in Lake Calavera Trails, Florida Canyon, Lopez Canyon Trail, Santa Margarita River Trail, Elfin Forest Recreation Reserve and more
    • Installation of a 350 foot boardwalk in the Otay Valley Regional Park 
    • ..and more! 
  • 75+ Guided Rides and other events to engage our community
  • Over 7500 hours logged by our amazing volunteers on trail work projects, large and small events, advocacy efforts and more
  • Ongoing advocacy with land managers and elected officials for developments at:
    • Sycamore Canyon- Goodan Ranch 
    • City of San Diego
    • City of Chula Vista
    • City of Carlsbad
    • Mission Trails Regional Park
    • Rancho Lilac 
    • Cuyamaca Rancho State Park
    • Cleveland National Forest
  • Learn about our plans for 2024 below 

Donations made here will be used where they are needed most! 

Whether that's covering operating costs, clearing a fallen tree, buying lumber for a bridge, a shovel for a volunteer, or prepping for an awesome event like the Archipelago Ride or the Mount Laguna Trail Fest, we'll make sure your money has the most impact on our trails and our community. In addition, your support provides resources for our staff and our volunteers to partner with user groups, land managers, and policymakers to improve access and your trail experience.  

SDMBA is a 501c3 non-profit organization. Your gift is tax-deductible to the extent allowed by law. The tax deduction is limited to the excess of the contribution over the fair market value of any items received in exchange for the donation. (Federal Tax ID #20-1701837)

What's In the Works for 2024? 

  • Implement planned trail projects this winter and early spring at:
    • Peñasquitos Canyon Preserve 
    • Black Mountain
    • Daley Ranch 
    • Tri-Canyons
    • Mount Laguna 
    • Florida Canyon/Balboa Park
    • Otay Valley Regional Park  
    • ...and more 
  • Anticipate and plan for the approval and implementation of the Mount Laguna Trails Restoration Plan by the Cleveland National Forest which includes almost 8 miles of new trails, meadow boardwalk project, reroutes & adopting non-system trails (including Wooded Hill) into the system
  • Push long-term advocacy efforts for new trails and improvements at:
    • Black Mountain Open Space Park
    • Daley Ranch
    • Sycamore/Goodan Ranch
    • Sweetwater Reservoir Loop Trail
    • Otay Valley Regional Park
    • Boulder Oaks
    • US Fish and Wildlife San Diego National Wildlife Refuge
    • Mission Trails Regional Park
    • Cuyamaca Rancho State Park
    • Chula Vista Canyon Trails
    • ...and more
  • Encourage and support Bike Park development and planning with many jurisdictions around the county including the opening of the new Bradley Park Bike Park in San Marcos
  • Monitor ebike opportunities and challenges with various agencies and jurisdictions and assist land managers as they navigate evolving policies regarding ebikes
  • Engage in ongoing planning processes for long-distance trails and routes such as the Coast to Crest Trail, the Trans-County Trail & the San Diego River Trail with partners and stakeholders
  • Encourage mountain bikers to engage on local planning groups, Citizen’s Advisory and Trails committees and with elected officials to ensure our seat at the tables where trail decisions are made
  • Provide Trail Education and Trail Courtesy materials and content to our entire trails community 
  • Be an active and engaged member organization of the California Mountain Biking Coalition and affiliate of the International Mountain Biking Coalition  
  • Monitor issues in our county and regionally that may have an impact on recreational access such as the proposed National Monument in San Diego County and other federal and state regulatory land use efforts
  • Collaborate with our community partners such as Girlz Gone Riding and Sprockids to make cycling in San Diego more accessible and equitable for all people 
  • Plan for MTB community fun at
    • the Archipelago Ride (May 11, 2024)
    • the Mount Laguna Trail Fest (OCTOBER 18-20, 2024)
  • Advocate for more legal trails for all skill levels and uses in San Diego County!

To arrange a donation off-line or to discuss other options for support such as donations of stock, please contact

Please check for SDMBA on your employer's corporate giving platform.  SDMBA particpates in Benevity, CyberGrants and more! 

Any other questions regarding support, off-line donations, employee/company matching programs, or donations of stock, can be directed to Susie Murphy at 


One-Time Gifts and Monthly Recurring, Tax-Deductible Donations are greatly appreciated!

What It Means To Be A Member

  • Supporting advocacy efforts for new trails, existing trail improvements, and bike parks
  • Funding trail restoration, maintenance, planning, and development projects
  • Supporting operating costs including trail equipment, tools, insurance, planning, and staff
  • Training and rewarding, and nourishing our hardworking trail volunteers
  • Planning events including the Arch Ride, Mt. Laguna Trail Fest, and kids-friendly events
  • Playing your part in building a legacy of legal trails in San Diego County

Simply put, we could not do this without our members, volunteers, and donors; the lifeblood of our organization. Thank you!


Caballo Trail Rebuilt - Daley Ranch

Many thanks to these generous individual donors:

Proud Participant in the Following Programs: