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USFS National Forest System Trails · Montana · Updated June 2026

Beaverhead-Deerlodge National Forest Mountain Bike Trails

Beaverhead-Deerlodge National Forest carries 3,216 mi of mapped National Forest System trail, of which 48.9 mi across 12 segments is designated for mountain bikes, typically open Year-round. Class 1 e-bikes are designated on 2 segments (1.1 mi).

48.9 mi
Bike-designated
12 segments
3,216 mi
Total NFS trail
746 segments
1.1 mi
Class 1 e-bike
2 segments
0
ADA-accessible
trail segments

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

TrailMilesSurfaceTrail classBike season
Continental Divide Nst41.36Native Material2Year-round
Continental Divide Nst2.21Native Material2Year-round
Continental Divide1.6Native Material2Year-round
Inspiration Divide1.04Native Material4Year-round
Continental Divide Nst1.01Native Material2Year-round
Continental Divide Nst0.52Native Material2Year-round

E-bikes in Beaverhead-Deerlodge National Forest

Class 1 on 2 segments · Class 2 on 2 · Class 3 on 2. See full e-bike rules for Beaverhead-Deerlodge National Forest

Frequently asked questions

How many miles of mountain bike trail are in Beaverhead-Deerlodge National Forest?
Beaverhead-Deerlodge National Forest has about 48.9 mi of bike-designated trail across 12 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 2 segments. See the e-bike rules page for the class-by-class breakdown.