USFS National Forest System Trails · Montana · Updated June 2026
Flathead National Forest Mountain Bike Trails
Flathead National Forest carries 2,260 mi of mapped National Forest System trail, of which 79.6 mi across 33 segments is designated for mountain bikes, typically open May–Oct. Class 1 e-bikes are designated on 130 segments (206 mi).
79.6 mi
Bike-designated
33 segments
2,260 mi
Total NFS trail
888 segments
206 mi
Class 1 e-bike
130 segments
6
ADA-accessible
trail segments
Trail surface
- Native Material810
- Snow65
- Imported Compacted Material8
USFS trail class (1 = primitive · 5 = developed)
- Class 3494
- Class 2298
- Class 469
- Class 123
4% 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 |
|---|---|---|---|---|
| Jimmie Ridge | 8.42 | Native Material | 3 | Year-round |
| Ingalls - Mt Conner | 7.43 | Native Material | 3 | Year-round |
| Beardance | 6.82 | Native Material | 3 | Year-round |
| Alpine 7 | 6.3 | Native Material | 3 | Year-round |
| Ashley Divide | 5.84 | Native Material | 3 | Jun–Nov |
| Wild Bill - Truman Creek | 5.78 | Native Material | 3 | Year-round |
| Wild Bill - Eagle Mtn. Trail | 5.76 | Native Material | 3 | Year-round |
| Ashley Mtn | 5.21 | Native Material | 3 | Year-round |
| Alpine 7 | 4.38 | Native Material | 3 | Year-round |
| Pine Grass | 4.37 | Unknown | — | Year-round |
| Skyland | 4.23 | Native Material | 3 | Year-round |
| Upper Dayton Creek Ohv | 4.19 | Native Material | 3 | Year-round |
| Johnson Peak | 4.17 | Native Material | 3 | Jun–Oct |
| Elk Mtn. | 4.14 | Native Material | 3 | Jun–Oct |
| Lupine Lake | 3.95 | Native Material | 3 | Jun–Nov |
| Wire Trail | 3.88 | Native Material | 4 | Year-round |
| Griffin Creek | 3.81 | Native Material | 3 | Year-round |
| South Fork Hemler Creek | 3.49 | Native Material | 3 | Year-round |
| Lakeside To Blacktail | 3.38 | Native Material | 3 | Year-round |
| Krause Basin 905 | 3.35 | Native Material | 3 | Year-round |
| Round Meadow Loop | 3.33 | Native Material | 4 | May–Oct |
| Runaway Train | 2.89 | Native Material | 4 | Jun–Sep |
| Lower South Fork | 2.71 | Native Material | 3 | Year-round |
| Sixmile Sidehill | 2.5 | Native Material | 3 | Year-round |
| Peterson Creek | 2.37 | Native Material | 3 | Year-round |
E-bikes in Flathead National Forest
Class 1 on 130 segments · Class 2 on 130 · Class 3 on 130. See full e-bike rules for Flathead National Forest →
Frequently asked questions
- How many miles of mountain bike trail are in Flathead National Forest?
- Flathead National Forest has about 79.6 mi of bike-designated trail across 33 segments, out of 2,260 mi of total National Forest System trail.
- What is the riding season in Flathead National Forest?
- Most bike-designated trails in Flathead National Forest carry a May–Oct season in USFS data; higher-elevation trails clear later.
- Are e-bikes allowed in Flathead National Forest?
- Only where designated. Class 1 e-bikes are recorded on 130 segments. See the e-bike rules page for the class-by-class breakdown.
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All Montana mountain biking