BUILD.
RIDE.
PROTECT.

Welcome to SDMB!

Sonoran Desert Mountain Bicyclists is a volunteer-driven 501(c)(3) non-profit organization devoted to the promotion of the sport of mountain bicycling, and views the sport as a vehicle to promote low impact outdoor recreation, conservation, and mountain bicycling opportunities that are environmentally and socially responsible. 

Help us Preserve Tucson's Bike Trails

We work to build, maintain, and protect multi-use single-track and mountain bike trail access in the greater Tucson, AZ region. Please consider supporting us through your membership, donations, or helping with trail work. 

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Upcoming Events

News and Updates

Brushtober Fest Is Here!

By Kirk Astroth • 19 Sep, 2024
Brushtober Fest is here and you are invited to help. Each year, SDMB identifies trails in need of some "trail love" after the active monsoon season. No experience is necessary and everyone is invited to help out with brushing back overgrown vegetation, repairing minor tread damage and have fun while meeting others interested in mountain biking and trails. This year, 4 events are planned: Sweetwater, September 28th, 8:00 to 12:30 PM Mt. Graham, October 11-13th Fantasy Island, October 20th, 8:00 to Noon Starr Pass, November 9th, 8:00 to Noon More information and registration is available on our website under "Events." Lunch and beverages are provided to all volunteers who register in advance. Tools are also provided. So, come on out and give our trails some much needed love as we get ready for the fall and winter riding season. See you on the trails.

8-ish Days of Christmas

By Kent Loganbill • 05 Dec, 2023
SDMB is pleased to host the 2023 8-ish days of Christmas ride series! This will be a series of mountain bike rides around the Tucson area to celebrate the holidays. Come one come all for the festivities and relax.

SDMB Mt. Graham Work Leads to Awesome Trails

By Kirk Astroth • 27 Oct, 2023
The Graham Cracker: Years-long project yields world-class mountain bike course on Mount Graham Read more about it hereThe Graham Cracker: Years-long project yields world-class mountain bike course on Mount Graham
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About SDMB

SDMB is dedicated to building, protecting and enhancing mountain bicycling opportunities through:


  • providing fun, safe bicycling experiences and social events for the bicycling community, and at the same time using these events as an opportunity to educate and encourage riders.
  • promoting responsible riding and ethical behavior among the mountain bicycling community .
  • working in concert with land managers and owners to improve trails and infrastructure.
  • working with other user groups to ensure a quality trail experience for all users.
  • efforts to increase the diversity of the mountain bicycling community.
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Why SDMB Matters

Your membership in SDMB provides us with the ability to have an influence on mountain bike advocacy, outdoor recreation, trail building, maintenance and access. 

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Honoring Native Lands: Preserving Trails for All

We are grateful for the opportunity to live and work on traditionally Native lands, including those belonging to the O'odham, Tohono O'odham, and Pascua Yaqui.


We are proud to be partners with Pima County, the Town of Marana and the Coronado National Forest to keep recreation trails open and enjoyable for all.


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