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Advocating for trails and mountain biking in Boulder, Colorado since 1991
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BMA has a ton of cool stuff happening all season.
Sign up for a trail building event to put your muscle to good use.
Join us on one of our weekly group rides.
Learn how to take your mountain biking skills to the next level by attending one of BMA’s skills clinics.
See the other fun stuff we’re planning!
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All The News…
2025 – A Year of More Fun on Trails
2025 Annual Report: Building better trails. Showing up for riders. Moving bike access forward across Boulder County.
Sponsor the Brute Squad – 2026
Want to promote your business and support for mountain biking? Join us as a sponsor for the 2026 BMA Brute Squad.
OSMP Planning in 2026 Could Unlock South Boulder Bike Connection
A South Boulder connection from Shanahan Ridge to Doudy Draw was a topic of long conversation at the 12/10/2025 OSBT meeting.
