USFS National Forest System Trails · Idaho · Updated October 2026
Can You Mountain Bike in Sawtooth National Forest, Idaho?
Yes — Sawtooth National Forest in Idaho has 782 mi of bike-designated National Forest System trail across 197 segments, typically open Year-round, according to official USFS travel-management data.
- Bike-designated
- 782 mi197 segments
- Total NFS trail
- 2,323 mi979 segments
- Bike season
- Year-roundUSFS managed-use
- ADA-accessible
- 4trail segments
34% 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 Sawtooth National Forest
| Trail | Miles | Surface | Bike season |
|---|---|---|---|
| Livingston Mill-Castle Divide | 21.56 | Native Material | — |
| Warm Springs Creek | 20.75 | Native Material | — |
| Harriman Trail | 18.64 | Other | Year-round |
| Big Smoky | 18.6 | Native Material | Year-round |
| Alpine Way | 16.66 | Native Material | Year-round |
| Skyline Trail | 15 | Native Material | Year-round |
| Iron Creek - Stanley Lake | 14.54 | Native Material | Year-round |
| Martin-Big Casino | 13.75 | Native Material | — |
| Soldier Cr-Miller Cr | 13.66 | Native Material | Year-round |
| Paradise Creek | 13.51 | Native Material | Year-round |
| Skyline | 12.73 | Native Material | — |
| Big Peak/East Fork Big Peak | 12.42 | Native Material | Year-round |
| Alturas Lake-Mattingly | 12.24 | Native Material | — |
| Big Cottonwood | 12.1 | Native Material | — |
| Grand Prize | 11.74 | Native Material | — |
Frequently asked questions
- How many miles of mountain bike trail are in Sawtooth National Forest?
- Sawtooth National Forest has about 782 mi of bike-designated trail across 197 segments, out of 2,323 mi of total National Forest System trail.
- Are e-bikes allowed in Sawtooth National Forest?
- Only where designated — on Forest Service land e-bikes are motor vehicles. Class 1 e-bikes are recorded on 318 segments here.
- What is the mountain-bike season in Sawtooth National Forest (Idaho)?
- Most bike-designated trails carry a Year-round season in USFS data; higher-elevation trails open later.