The International Mountain Bicycling Association (IMBA) is a 501 (c) 3 non-profit educational association whose mission is to create, enhance and preserve great mountain biking experiences.


Since 1988, IMBA has been bringing out the best in mountain biking by encouraging low-impact riding, volunteer trailwork participation, cooperation among different trail user groups, grassroots advocacy and innovative trail management solutions.

IMBA’s worldwide network includes 35,000 individual members, more than 750 bicycle clubs, more than 160 corporate partners and about 600 retailer shops. IMBA’s members live in all 50 U.S. states, most Canadian provinces and in 30 other countries.

IMBA’s headquarters in the United States are located in Boulder, Colorado. We currently have 42 full-time staff members, including seven regional directors located in the Pacific Northwest, Southwest, Rocky Mountains, Upper Midwest, Great Lakes, Mid-Atlantic and Southeast regions of the United States.

This website primarily serves IMBA’s programs in the U.S. but you will also find reports from IMBA affilates around the globe here. Visit our international programs page for more about IMBA’s work outside the U.S.

The U.S. Internal Revenue Service recognizes IMBA as a tax-exempt, 501(c)(3) charitable organization. IMBA’s tax identification number is 77-0204066.

IMBA has received a 4-star, exceptional rating from Charity Navigator for having the highest program allocation and lowest fundraising costs in the field from America’s largest and most-utilized independent evaluator of charities. When you join or support us, your money goes where it matters.

International Mountain Bicycling Association

P.O. Box 7578, Boulder, CO 80306
Fax: 303-545-9026

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