USFS National Forest System Trails · Montana · Updated June 2026
Beaverhead-Deerlodge National Forest Mountain Bike Trails
Beaverhead-Deerlodge National Forest earns a Bike Access Grade of A: 100% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Excellent — most rideable trail miles are open to mountain bikes, with Class-1 e-bike access too.
Beaverhead-Deerlodge National Forest carries 3,216 mi of mapped National Forest System trail, of which 54.3 mi across 4 segments is designated for mountain bikes, typically open Year-round. Class 1 e-bikes are designated on 1 segments (6.6 mi).
What the USFS data shows for Beaverhead-Deerlodge National Forest
Of the 3,216 mi of mapped trail in Beaverhead-Deerlodge National Forest, 2% — 54.3 mi across 4 bike-designated segments — is open to mountain bikes in USFS travel-management data.
Tread is overwhelmingly native dirt: USFS lists native material on 27 of 27 surfaced segments (100%).
On the USFS difficulty rating, advanced is the most common designation here — 19 of 26 rated segments (73%) — across all uses, not bikes alone.
USFS records a year-round bike season for this forest, though high-elevation trails clear later in practice.
The longest single named bike segment in the data is Continental Divide Nst at 45.1 mi on native dirt, rated advanced by USFS and open Year-round.
Class 1 e-bikes are designated on 1 segments (6.6 mi), and no segments carry an ADA-accessibility flag in the same dataset.
Trail surface
- Native Material27
USFS trail class (1 = primitive · 5 = developed)
- Class N719
- Class 225
- Class 41
- Class 31
2% 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 |
|---|---|---|---|---|
| Continental Divide Nst | 45.1 | Native Material | — | Year-round |
| Inspiration Divide | 6.56 | Native Material | — | Year-round |
| Continental Divide | 2.35 | Native Material | — | Year-round |
Every trail in Beaverhead-Deerlodge National Forest
All 3 ridable trails in this forest — every trail where USFS data designates mountain-bike or Class 1 e-bike use, grouped by grade-based steepness. Grade reflects slope, not technical difficulty. Each trail links to its full data profile.
Advanced grade (2)
Steep grade band.
- Continental Divide Nst45.1 mi · bike
- Inspiration Divide6.6 mi · bike + e-bike
Beaverhead-Deerlodge National Forest bike-legal trail list (CSV)
Download all 3 bike- and Class 1 e-bike-designated trails in Beaverhead-Deerlodge National Forest — name, miles, surface, grade, season, and e-bike class per trail, straight from USFS data.
E-bikes in Beaverhead-Deerlodge National Forest
Class 1 on 1 segments · Class 2 on 1 · Class 3 on 1. See full e-bike rules for Beaverhead-Deerlodge National Forest →
Where it is
Approximate center of Beaverhead-Deerlodge National Forest. USFS trail geometry isn't mapped here — use the ranger district for trailheads.
Frequently asked questions
- What is the bike access grade for Beaverhead-Deerlodge National Forest?
- Beaverhead-Deerlodge National Forest earns a Bike Access Grade of A: 100% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Excellent — most rideable trail miles are open to mountain bikes, with Class-1 e-bike access too.
- How many miles of mountain bike trail are in Beaverhead-Deerlodge National Forest?
- Beaverhead-Deerlodge National Forest has about 54.3 mi of bike-designated trail across 4 segments, out of 3,216 mi of total National Forest System trail.
- What is the riding season in Beaverhead-Deerlodge National Forest?
- Most bike-designated trails in Beaverhead-Deerlodge National Forest carry a Year-round season in USFS data; higher-elevation trails clear later.
- Are e-bikes allowed in Beaverhead-Deerlodge National Forest?
- Only where designated. Class 1 e-bikes are recorded on 1 segments. See the e-bike rules page for the class-by-class breakdown.
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