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USFS National Forest System Trails · Colorado · Updated June 2026

Arapaho and Roosevelt National Forests Mountain Bike Trails

ABike Access Grade A — 99% of rideable miles open to bikes. How we grade

Arapaho and Roosevelt National Forests earns a Bike Access Grade of A: 99% 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.

Arapaho and Roosevelt National Forests carries 1,440 mi of mapped National Forest System trail, of which 620 mi across 285 segments is designated for mountain bikes, typically open Year-round. Class 1 e-bikes are designated on 53 segments (132 mi).

Reviewed by CanIBikeHere Editorial Team · Updated
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What the USFS data shows for Arapaho and Roosevelt National Forests

Of the 1,440 mi of mapped trail in Arapaho and Roosevelt National Forests, 43% — 620 mi across 285 bike-designated segments — is open to mountain bikes in USFS travel-management data.

Tread is overwhelmingly native dirt: USFS lists native material on 794 of 910 surfaced segments (87%).

On the USFS difficulty rating, advanced is the most common designation here — 609 of 905 rated segments (67%) — across all uses, not bikes alone.

USFS records a year-round bike season for this forest, though 3 different season windows still appear on individual segments at higher elevation.

The longest single named bike segment in the data is Flowers at 18.51 mi on native dirt, rated advanced by USFS and open Year-round.

Class 1 e-bikes are designated on 53 segments (132 mi), and 8 segments carry an ADA-accessibility flag in the same dataset.

A
Bike Access Grade
99% of rideable miles bike-open
228
Ridable trails
with their own page
620 mi
Bike-designated
285 segments
1,440 mi
Total NFS trail
910 segments
132 mi
Class 1 e-bike
53 segments

Trail surface

  • Native Material794
  • Snow106
  • Asphalt4
  • Imported Loose Material3
  • Other2

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

  • Class 2521
  • Class 3322
  • Class 433
  • Class 124
  • Class 56

43% 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
Flowers18.51Native Material—Year-round
High Lonesome18.15Native Material—Year-round
Buchanan Pass15.61Native Material—Year-round
Cub Creek15.18Native Material—Year-round
Sourdough14.64Native Material—Year-round
Bard Creek10.5Native Material—Year-round
Danner Pass10Native Material—Year-round
Lookout Mountain8.26Native Material—Year-round
West Stillwater8.17Native Material—Jun–Nov
Crosier Mountain8Native Material—Year-round
Strawberry Creek7.84Native Material—Jun–Nov
Pawnee Pass7.76Native Material—Year-round
Jones Pass7.36Native Material—Year-round
Granite Ridge7.2Native Material—Jul–Oct
Williams Peak6.76Native Material—Jun–Nov
Richey Creek6.67Native Material—Jun–Nov
St Vrain Mountain6.65Native Material—Year-round
Hewlett Gulch6.5Native Material—Year-round
M. Walter Pesman6.49Native Material—Jun–Nov
Summit Flats6.33Native Material—Jun–Nov
Elk Mountain6.19Native Material—Jun–Nov
Mount Flora6.02Native Material—Year-round
Hells Hole5.96Native Material—Year-round
Roaring Creek5.91Native Material—Year-round
Resthouse Meadows5.89Native Material—Year-round

Every trail in Arapaho and Roosevelt National Forests

All 228 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 (66)

Gentle grade band (shallow average slope).

Intermediate grade (11)

Moderate grade band.

Advanced grade (148)

Steep grade band.

Grade not recorded (3)

No grade band recorded in the USFS data.

CSV

Arapaho and Roosevelt National Forests bike-legal trail list (CSV)

Download all 228 bike- and Class 1 e-bike-designated trails in Arapaho and Roosevelt National Forests — name, miles, surface, grade, season, and e-bike class per trail, straight from USFS data.

E-bikes in Arapaho and Roosevelt National Forests

Class 1 on 53 segments · Class 2 on 53 · Class 3 on 53. See full e-bike rules for Arapaho and Roosevelt National Forests →

Where it is

Approximate center of Arapaho and Roosevelt National Forests. USFS trail geometry isn't mapped here — use the ranger district for trailheads.

Frequently asked questions

What is the bike access grade for Arapaho and Roosevelt National Forests?
Arapaho and Roosevelt National Forests earns a Bike Access Grade of A: 99% 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 Arapaho and Roosevelt National Forests?
Arapaho and Roosevelt National Forests has about 620 mi of bike-designated trail across 285 segments, out of 1,440 mi of total National Forest System trail.
What is the riding season in Arapaho and Roosevelt National Forests?
Most bike-designated trails in Arapaho and Roosevelt National Forests carry a Year-round season in USFS data; higher-elevation trails clear later.
Are e-bikes allowed in Arapaho and Roosevelt National Forests?
Only where designated. Class 1 e-bikes are recorded on 53 segments. See the e-bike rules page for the class-by-class breakdown.

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