The Clinton River Area Mountain Bike Association (CRAMBA), a chapter of the International Mountain Bicycling Association (IMBA), exists to maintain and develop mountain biking trail access, support relationships with land managers, and promote responsible mountain biking in Southeast Michigan.

We are an all-volunteer 501(c)3 non-profit that works with local parks and land managers to support and enhance mountain biking here in Southeast Michigan.

From Shelby Township to Rochester, Sterling Heights to Port Huron, and Lapeer to Pontiac, we work to make your favorite trails better.

With the support of our members, donors, volunteers, and event partners we work to give riders a world-class mountain biking experience in Southeast Michigan.