IMBA creates, enhances and preserves trail opportunities for mountain bikers worldwide.

Boulder Off-Road Alliance Serving Trails In Boulder County Since 1991 BOA Selects New Executive Director So, what's happening Our Mission Boulder Off-Road Alliance exists to serve as a positive voice for Mountain Biking by making the trails in Boulder County a better place for all users. Meetings BOA General Membership meetings are held March-October at 7:00pm at The Rockies Brewery, 2880 ...