Advocating for trails and mountain biking in Boulder, Colorado since 1991
BMA has a ton of great events happening all season. Join us!
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!
Over 100 BMA members attended the annual Super Summer Bike Bash membership party on June 15, 2019 at Dale’s private farm and bike park in North Boulder.read more
The new Schoolhouse Loop at Heil Valley Ranch opened on June 7, 2019 and is Boulder County’s first beginner/kids skills trail.read more
When crews are blasting rock, both Boulder Canyon Drive and the Boulder Canyon Trail will be closed.read more