Land and Trail Management Agencies
- USFS – White River National Forest
- BLM – Colorado River Valley Field Office
- Pitkin County Open Space & Trails
- City of Aspen Parks Trails & Open Space
- Town of Basalt
- Eagle County – ECO Trails
- Carbondale Parks & Recreation
- Glenwood Springs Parks & Recreation
- Garfield County
Trail Maintenance and Advocacy Groups
Mountain Bike Advocacy Groups
- International Mountain Bicycling Association
- Cloud City Wheelers (Leadville)
- Colorado Plateau Mountain Bike Trail Association
- Crested Butte Mountain Bike Association
- Routt County Riders (Steamboat Springs)
- Salida Mountain Trails
- Summit Fat Tire Society
- Vail Valley Mountain Bike Association
Bicycle Racing Groups