USFS National Forest System Trails · Colorado · Updated June 2026
Arapaho and Roosevelt National Forests Mountain Bike Trails
Arapaho and Roosevelt National Forests carries 1,440 mi of mapped National Forest System trail, of which 519 mi across 382 segments is designated for mountain bikes, typically open Year-round. Class 1 e-bikes are designated on 69 segments (124 mi).
519 mi
Bike-designated
382 segments
1,440 mi
Total NFS trail
910 segments
124 mi
Class 1 e-bike
69 segments
12
ADA-accessible
trail segments
Trail surface
- Native Material794
- Snow106
- Asphalt4
- Imported Loose Material3
- Other2
USFS trail class (1 = primitive · 5 = developed)
- Class 2521
- Class 3322
- Class 433
- Class 124
- Class 56
36% of this forest's mapped trail is bike-designated. Note: USFS records trail grade (steepness), not technical MTB difficulty — we surface grade where present but do not infer a black/blue/green rating from it.
Largest bike-designated trails
| Trail | Miles | Surface | Trail class | Bike season |
|---|---|---|---|---|
| Bard Creek | 9.47 | Native Material | 2 | Year-round |
| Granite Ridge | 7.2 | Native Material | 2 | Jul–Oct |
| Williams Peak | 6.76 | Native Material | 2 | Jun–Nov |
| Young Gulch | 5.33 | Native Material | 3 | Year-round |
| Horseshoe-Sulphur | 4.13 | Native Material | 2 | Jun–Nov |
| Tim'S Trail | 4.11 | Native Material | 3 | Jun–Nov |
| Warren Gulch | 3.43 | Native Material | 3 | Year-round |
| Flowers | 3.1 | Native Material | 2 | Year-round |
| No-See-Um | 3.09 | Native Material | 3 | Jun–Nov |
| North Supply Loop | 3.08 | Native Material | 3 | Jun–Nov |
| Buffalo Creek | 2.89 | Native Material | 2 | Jun–Nov |
| Strawberry Bench | 2.87 | Native Material | 2 | Jun–Nov |
| Strawberry West | 2.52 | Native Material | 2 | Jun–Nov |
| Sourdough | 2.52 | Native Material | 2 | Year-round |
| Maxwell Falls | 2.39 | Native Material | 3 | Year-round |
| No-See-Um | 2.19 | Native Material | 3 | Jun–Nov |
| Herman Gulch | 2.14 | Native Material | 3 | Year-round |
| Soda Pass | 2.04 | Native Material | 3 | Jun–Nov |
| Jim Creek | 2 | Native Material | 2 | Jun–Nov |
| Drowsy Water | 1.95 | Native Material | 2 | Jun–Nov |
| Berthoud Pass West | 1.83 | Native Material | 3 | Year-round |
| Bill Miller | 1.79 | Native Material | 2 | Jun–Nov |
| Gilsonite 2 | 1.72 | Native Material | 3 | Jun–Nov |
| Silver Dollar Lake | 1.63 | Native Material | 2 | Year-round |
| Leap Frog | 1.55 | Native Material | 3 | Jun–Nov |
E-bikes in Arapaho and Roosevelt National Forests
Class 1 on 69 segments · Class 2 on 69 · Class 3 on 69. See full e-bike rules for Arapaho and Roosevelt National Forests →
Frequently asked questions
- How many miles of mountain bike trail are in Arapaho and Roosevelt National Forests?
- Arapaho and Roosevelt National Forests has about 519 mi of bike-designated trail across 382 segments, out of 1,440 mi of total National Forest System trail.
- What is the riding season in Arapaho and Roosevelt National Forests?
- Most bike-designated trails in Arapaho and Roosevelt National Forests carry a Year-round season in USFS data; higher-elevation trails clear later.
- Are e-bikes allowed in Arapaho and Roosevelt National Forests?
- Only where designated. Class 1 e-bikes are recorded on 69 segments. See the e-bike rules page for the class-by-class breakdown.
More Colorado national forests
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Medicine Bow-Routt National Forest
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Rio Grande National Forest
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All Colorado mountain biking