Do your part for more and better rides in Boulder County!

Join the Boulder Mountainbike Alliance!


The Boulder Mountainbike Alliance is run by volunteers. The more members we have, the more influence we have with land managers and open space policy makers in Boulder County. Your membership will help us put more trails on the ground for you to ride!

Join BMA by using our on-line membership sign-up form at On-line BMA Sign-up.

If you prefer you can download and complete our membership form, BMA Membership Form (pdf), and send it along with a check for $30 to:

Boulder Mountainbike Alliance
P.O. Box 4954
Boulder, CO 80306-4954


BMA Privacy Policy: BMA will not share your membership information or email with any organizations whatsoever. If you subscribe to the newsletter we will send you notices of social rides, trail projects, and trail advocacy action alerts. You can unsubscribe from the newsletter at any time.