USFS National Forest System Trails · Updated June 2026
Colorado Mountain Bike Trails
Across 7 national forests in Colorado, USFS data maps 3,929 mi of bike-designated trail on 1,987 segments, led by Grand Mesa, Uncompahgre and Gunnison National Forests (1,618 mi). Class 1 e-bikes are designated on 1,493 segments.
3,929 mi
Bike-designated
1,987 segments
15,805 mi
Total NFS trail
7
National forests
3,611 mi
Class 1 e-bike
1,493 segments
National forests in Colorado
| National forest | Bike miles | Total trail | Class 1 e-bike |
|---|---|---|---|
| Grand Mesa, Uncompahgre and Gunnison National Forests | 1,618 mi | 3,787 mi | 398 |
| White River National Forest | 868 mi | 2,674 mi | 138 |
| Pike and San Isabel National Forests | 573 mi | 2,360 mi | 330 |
| Arapaho and Roosevelt National Forests | 519 mi | 1,440 mi | 69 |
| San Juan National Forest | 218 mi | 1,931 mi | 226 |
| Medicine Bow-Routt National Forest | 134 mi | 2,367 mi | 231 |
| Rio Grande National Forest | 0 mi | 1,247 mi | 101 |
E-bike rules in Colorado
On Forest Service land e-bikes are motor vehicles, allowed only where designated. See Colorado e-bike rules by class and forest →
Frequently asked questions
- How many miles of national-forest mountain bike trail are in Colorado?
- About 3,929 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 1,618 mi of bike-designated trail.
- Are e-bikes allowed in Colorado national forests?
- Only where designated — e-bikes are motor vehicles on Forest Service land. Class 1 access is recorded on 1,493 segments. See the Colorado e-bike rules page.