USFS National Forest System Trails · Updated October 2026
Where Can You Mountain Bike in Colorado?
Across 7 national forests in Colorado, USFS data maps 4,229 mi of bike-designated trail on 1,369 segments, led by Grand Mesa, Uncompahgre and Gunnison National Forests with 1,723 mi. These are the National Forest System trails where mountain bikes are officially designated.
- Bike-designated
- 4,229 mi1,369 segments
- Total NFS trail
- 15,811 mi
- National forests
- 7
- Class 1 e-bike
- 4,135 mi990 segments
Colorado national forests by bike-designated trail
| National forest | Bike miles | Class 1 e-bike segments |
|---|---|---|
| Grand Mesa, Uncompahgre and Gunnison National Forests | 1,723 mi | 319 |
| White River National Forest | 915 mi | 100 |
| Arapaho and Roosevelt National Forests | 620 mi | 53 |
| Pike and San Isabel National Forests | 619 mi | 183 |
| San Juan National Forest | 218 mi | 131 |
| Medicine Bow-Routt National Forest | 134 mi | 145 |
| Rio Grande National Forest | 0 mi | 59 |
Frequently asked questions
- How many miles of national-forest mountain bike trail are in Colorado?
- About 4,229 mi of bike-designated trail across 7 national forests, from USFS travel-management data.
- Which national forest has the most mountain biking in Colorado?
- Grand Mesa, Uncompahgre and Gunnison National Forests, with about 1,723 mi of bike-designated trail.