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 a weekly group ride.

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!

Upcoming Events

Tue 21

RIDE: Gurlz Ride

Tuesday, September 21 @ 5:00 pm - 7:00 pm
Wed 22

EVENT: Bike to Work Day Copy

Wednesday, September 22 @ 6:30 am - 9:00 am
Wed 22

RIDE: Knobby Wednesday

Wednesday, September 22 @ 5:00 pm - 7:00 pm

All The News…

Brutes Take on the Dakota Five-O

Brutes Take on the Dakota Five-O

After 17 weeks of preparation, 24 members of Brute Squad traveled on Labor Day weekend to Spearfish, South Dakota to finish up the 2021 season by participating in the 20th running of the Dakota Five-O race.

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Support Maryland Mountain with a Sweet Shirt

Support Maryland Mountain with a Sweet Shirt

BMA, in partnership with the Colorado Mountain Bike Association (COMBA) is releasing a limited run of 1st edition Maryland Mountain t-shirts with proceeds going directly into creating more killer MTB experiences in Black Hawk, CO!

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Join the BMA Community

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