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 our three weekly rides – one for 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!
SLAY IT FORWARD AND WIN! Each $1 donation to BMA’s Trail Fund gets you a chance to win a Specialized Stumpjumper Comp Carbon!read more
An important appointment to the City of Boulder’s five-member Open Space Board of Trustees (OSBT) will be made this Tuesday July 16 by City Council.read more
When crews are blasting rock, both Boulder Canyon Drive and the Boulder Canyon Trail will be closed.read more