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

        By Michael Dematties February 25, 2026
        Raffle Winner 2026
        By Michael Dematties December 2, 2025
        E-Bike News
        By Kirk Astroth December 19, 2024
        Expanding Public Lands Outdoor Recreation Experiences (EXPLORE) Act Passes Congress
        All News

        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'odhamTohono 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.