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USFS National Forest System Trails · Alaska · Updated June 2026

Tongass National Forest Mountain Bike Trails

FBike Access Grade F — 0% of rideable miles open to bikes. How we grade

Tongass National Forest earns a Bike Access Grade of F: 0% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Restricted — traditional bikes are open on very few of the forest’s rideable miles.

Tongass National Forest carries 917 mi of mapped National Forest System trail, of which 2.5 mi across 5 segments is designated for mountain bikes, typically open May–Oct. Class 1 e-bikes are designated on 298 segments (474 mi).

Reviewed by CanIBikeHere Editorial Team · Updated
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What the USFS data shows for Tongass National Forest

Of the 917 mi of mapped trail in Tongass National Forest, 0% — 2.5 mi across 5 bike-designated segments — is open to mountain bikes in USFS travel-management data.

Tread is overwhelmingly native dirt: USFS lists native material on 2,935 of 5,267 surfaced segments (56%).

On the USFS difficulty rating, easy is the most common designation here — 2,451 of 5,267 rated segments (47%) — across all uses, not bikes alone.

The headline bike season runs May–Oct; individual segments vary.

The longest single named bike segment in the data is Treadwell Ditch Trail at 9.78 mi on native dirt, rated easy by USFS.

Class 1 e-bikes are designated on 298 segments (474 mi), and 28 segments carry an ADA-accessibility flag in the same dataset.

F
Bike Access Grade
0% of rideable miles bike-open
240
Ridable trails
with their own page
2.5 mi
Bike-designated
5 segments
917 mi
Total NFS trail
5,269 segments
474 mi
Class 1 e-bike
298 segments

Trail surface

  • Native Material2,935
  • Imported Loose Material791
  • Imported Compacted Material748
  • Other697
  • Snow79

USFS trail class (1 = primitive · 5 = developed)

  • Class 32,979
  • Class 21,449
  • Class 4551
  • Class 1276
  • Class 513

0% 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
Treadwell Ditch Trail9.78Native Material——
Twin Lakes Road8.25Imported Loose Material——
Iris Meadows Road7.99Imported Loose Material——
Mid Italio7.9Native Material——
Muddy River7.53Imported Loose Material——
Shipley Bay 1530000 Road7.45Imported Loose Material——
Flicker Ridge6.9Imported Loose Material——
Montana Creek Trail6.88Native Material——
Indian River Road6.75Imported Loose Material——
Deer Creek Mid-Vally6.47Imported Loose Material——
Eagle River5.72Imported Loose Material——
Situk Lake5.66Native Material——
Bald Mountain 1425000 Road5.38Imported Loose Material——
Pine Point 2079000 Rd4.9Imported Loose Material——
Marble Island North 14800004.78Imported Loose Material——
Saint John Baptist Road4.78Imported Loose Material——
Bushy 8060500 Road4.65Imported Loose Material——
8337000 Road4.6Imported Loose Material——
Lake 1324.52Imported Loose Material——
Ocean Blvd Road4.3Imported Loose Material——
Mckenzie 2156000 Road4.29Imported Loose Material——
Three Knobs 1525200 Road4.12Imported Loose Material——
Situk River (Middle Situk Cabi3.88Native Material——
Patterson River3.84Imported Loose Material——
8400000 System Shoal Cove3.74Imported Loose Material——

Every trail in Tongass National Forest

All 240 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.

Easy grade (39)

Gentle grade band (shallow average slope).

Intermediate grade (1)

Moderate grade band.

Advanced grade (200)

Steep grade band.

CSV

Tongass National Forest bike-legal trail list (CSV)

Download all 240 bike- and Class 1 e-bike-designated trails in Tongass National Forest — name, miles, surface, grade, season, and e-bike class per trail, straight from USFS data.

E-bikes in Tongass National Forest

Class 1 on 298 segments · Class 2 on 298 · Class 3 on 298. See full e-bike rules for Tongass National Forest →

Where it is

Approximate center of Tongass 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 Tongass National Forest?
Tongass National Forest earns a Bike Access Grade of F: 0% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Restricted — traditional bikes are open on very few of the forest’s rideable miles.
How many miles of mountain bike trail are in Tongass National Forest?
Tongass National Forest has about 2.5 mi of bike-designated trail across 5 segments, out of 917 mi of total National Forest System trail.
What is the riding season in Tongass National Forest?
Most bike-designated trails in Tongass National Forest carry a May–Oct season in USFS data; higher-elevation trails clear later.
Are e-bikes allowed in Tongass National Forest?
Only where designated. Class 1 e-bikes are recorded on 298 segments. See the e-bike rules page for the class-by-class breakdown.

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