International Mountain Bicycling Association

[1] The IMBA was formed in 1988 by the Concerned Off Road Bicyclists Association, Bicycle Trails Council of the East Bay, Bicycle Trails Council of Marin, Sacramento Rough Riders and Responsible Organized Mountain Pedalers.

When Blumenthal began, the organization had roughly 1,200 individual members and about 60 affiliated clubs.

It held educational outreach programs, such as the Trail Care Crews, which was sponsored by Subaru Corporation.

IMBA has created a "Ride Center" designation where sites that feature "extensive trail networks" are recognized and rated.

[3] IMBA staff select candidates for "Ride Center" recognition on an invitation-only basis.