USFS National Forest System Trails · Colorado · Updated October 2026
Can You Mountain Bike in San Juan National Forest, Colorado?
Yes — San Juan National Forest in Colorado has 218 mi of bike-designated National Forest System trail across 61 segments, typically open May–Nov, according to official USFS travel-management data.
- Bike-designated
- 218 mi61 segments
- Total NFS trail
- 1,931 mi847 segments
- Bike season
- May–NovUSFS managed-use
- ADA-accessible
- 9trail segments
11% of this forest's mapped trail is bike-designated. USFS records trail grade (steepness), not technical MTB difficulty — we surface grade where present but do not infer a black/blue/green rating.
Bike-designated trails in San Juan National Forest
| Trail | Miles | Surface | Bike season |
|---|---|---|---|
| Aspen Loop | 33.77 | Native Material | — |
| Turkey Creek | 19.7 | Native Material | — |
| Hermosa Creek | 19.4 | Native Material | — |
| Sand Creek | 14.91 | Native Material | — |
| Bear Creek | 14.03 | Native Material | — |
| Piedra Stock Dr | 13.94 | Native Material | — |
| Calico South | 12.53 | Native Material | — |
| Sage Hen Loop | 12.48 | Native Material | May–Dec |
| Little Bean Canyon | 11.8 | Native Material | Jun–Oct |
| Morrison | 11.65 | Native Material | — |
| Stoner Mesa | 11.44 | Native Material | Jun–Oct |
| West Mancos | 11.22 | Native Material | — |
| Blackhawk - Co.Trail | 11.01 | Native Material | Jun–Oct |
| Boggy Lower Loop | 10.9 | Native Material | — |
| Boggy Upper Loop | 9.55 | Native Material | — |
Frequently asked questions
- How many miles of mountain bike trail are in San Juan National Forest?
- San Juan National Forest has about 218 mi of bike-designated trail across 61 segments, out of 1,931 mi of total National Forest System trail.
- Are e-bikes allowed in San Juan National Forest?
- Only where designated — on Forest Service land e-bikes are motor vehicles. Class 1 e-bikes are recorded on 131 segments here.
- What is the mountain-bike season in San Juan National Forest (Colorado)?
- Most bike-designated trails carry a May–Nov season in USFS data; higher-elevation trails open later.