Advocating for trails and mountain biking in Boulder, Colorado since 1991
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 rides – beginners, one for women of all levels, and one for intermediate to advanced riders.
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!
All The News…
What BMA has been up to on Picture Rock.. and why.
Betasso Access Alert: Due to an unsafe and confined work zone, Sugarloaf Road will need to be closed between CO 119 and Betasso Road, Monday – Friday during the day, for four weeks starting Friday, August 12.
City of Boulder Open Space & Mountain Parks (OSMP) staff is asking the public to weigh in on allowing e-bikes on some city-owned open space land. Under consideration is 54 miles of soft surface multiuse trails open to bikes. Of these 54 miles, about 23 miles are...