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USFS National Forest System Trails · Colorado · Updated June 2026

Pike and San Isabel National Forests Mountain Bike Trails

BBike Access Grade B — 51% of rideable miles open to bikes. How we grade

Pike and San Isabel National Forests earns a Bike Access Grade of B: 51% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Good — a solid majority of rideable miles welcome bikes.

Pike and San Isabel National Forests carries 2,360 mi of mapped National Forest System trail, of which 618 mi across 136 segments is designated for mountain bikes, typically open Year-round. Class 1 e-bikes are designated on 182 segments (681 mi).

Reviewed by CanIBikeHere Editorial Team · Updated
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What the USFS data shows for Pike and San Isabel National Forests

Of the 2,360 mi of mapped trail in Pike and San Isabel National Forests, 26% — 618 mi across 136 bike-designated segments — is open to mountain bikes in USFS travel-management data.

Tread is overwhelmingly native dirt: USFS lists native material on 1,276 of 1,340 surfaced segments (95%).

On the USFS difficulty rating, advanced is the most common designation here — 903 of 1,339 rated segments (67%) — across all uses, not bikes alone.

USFS records a year-round bike season for this forest, though 4 different season windows still appear on individual segments at higher elevation.

The longest single named bike segment in the data is Colorado at 194.38 mi on native dirt, rated advanced by USFS and open Year-round.

Class 1 e-bikes are designated on 182 segments (681 mi), and 15 segments carry an ADA-accessibility flag in the same dataset.

B
Bike Access Grade
51% of rideable miles bike-open
244
Ridable trails
with their own page
618 mi
Bike-designated
136 segments
2,360 mi
Total NFS trail
1,352 segments
681 mi
Class 1 e-bike
182 segments

Trail surface

  • Native Material1,276
  • Snow35
  • Imported Compacted Material20
  • Asphalt7
  • Chunk Wood1

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

  • Class 3757
  • Class 2381
  • Class 487
  • Class 172
  • Class 540

26% 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
Colorado194.38Native Material—Year-round
Rainbow99.92Native Material——
Turtle Mountain41.3Native Material——
Brookside-Mccurdy32.51Native Material—Year-round
Signal Butte Multi Use32.23Native Material——
Midland Bike Trail19.62Native Material—Year-round
Turtle Mountain15.85Native Material——
Indian13.56Native Material—Year-round
Long Hollow12.49Native Material——
Tanner/East Bear Gulch12.24Native Material——
Indian Creek11.41Native Material—Jan–Mar, Jun–Dec
Cisneros11.18Native Material——
South Park11.12Native Material—Jan–Mar, Jun–Dec
Rampart Reservoir10.86Native Material—Year-round
Rule Spur10.5Native Material——
Phantom Spur10.16Native Material——
Devils Revenge9.49Native Material——
Little Scraggy9.35Native Material—Year-round
Beginner9.22Native Material——
St. Charles9.22Native Material—Year-round
Picket Wire Canyonlands8.56Native Material—Year-round
7877.91Native Material——
South Apache7.46Native Material——
Threemile7.23Native Material—Year-round
Noddle7.22Native Material——

Every trail in Pike and San Isabel National Forests

All 244 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 (76)

Gentle grade band (shallow average slope).

Intermediate grade (29)

Moderate grade band.

Advanced grade (124)

Steep grade band.

Expert grade (5)

Steepest grade band.

Grade not recorded (10)

No grade band recorded in the USFS data.

CSV

Pike and San Isabel National Forests bike-legal trail list (CSV)

Download all 244 bike- and Class 1 e-bike-designated trails in Pike and San Isabel National Forests — name, miles, surface, grade, season, and e-bike class per trail, straight from USFS data.

E-bikes in Pike and San Isabel National Forests

Class 1 on 182 segments · Class 2 on 182 · Class 3 on 182. See full e-bike rules for Pike and San Isabel National Forests →

Where it is

Approximate center of Pike and San Isabel 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 Pike and San Isabel National Forests?
Pike and San Isabel National Forests earns a Bike Access Grade of B: 51% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Good — a solid majority of rideable miles welcome bikes.
How many miles of mountain bike trail are in Pike and San Isabel National Forests?
Pike and San Isabel National Forests has about 618 mi of bike-designated trail across 136 segments, out of 2,360 mi of total National Forest System trail.
What is the riding season in Pike and San Isabel National Forests?
Most bike-designated trails in Pike and San Isabel National Forests carry a Year-round season in USFS data; higher-elevation trails clear later.
Are e-bikes allowed in Pike and San Isabel National Forests?
Only where designated. Class 1 e-bikes are recorded on 182 segments. See the e-bike rules page for the class-by-class breakdown.

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Medicine Bow-Routt National Forest

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Rio Grande National Forest

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All Colorado mountain biking

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