How many miles of mountain bike trail are in San Juan National Forest?

San Juan National Forest has about 218 mi of bike-designated trail across 61 segments, out of 1,931 mi of total National Forest System trail.

What is the riding season in San Juan National Forest?

Most bike-designated trails in San Juan National Forest carry a May–Nov season in USFS data; higher-elevation trails clear later.

Are e-bikes allowed in San Juan National Forest?

Only where designated. Class 1 e-bikes are recorded on 131 segments. See the e-bike rules page for the class-by-class breakdown.

Updated October 2026

San Juan National Forest Mountain Bike Trails

Mountain bike

218mi

designated on 61 segments

11% of mapped trail

E-bike

563miClass 1

designated on 131 segments

29% of mapped trail

Mountain bike

218mi

designated on 61 segments

11% of mapped trail

Season on record: May–Nov
Bike Access Grade: C29% of rideable miles open to bikes. How we grade

E-bike

563miClass 1

designated on 131 segments

Class 1563 mi
Class 2563 mi
Class 3563 mi

Treated as a motor vehicle: ridden only where designated.

Ridable trails: 165
Mapped trail: 1,931 mi on 847 segments

Both lanes share one scale: the 1,931 mi of National Forest System trail mapped in San Juan National Forest, Colorado. From USFS National Forest System Trails records, updated October 2026.

San Juan National Forest earns a Bike Access Grade of C: 29% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Mixed — bikes are open on a meaningful share of rideable trails, but many are e-bike-only or discouraged.

San Juan National Forest carries 1,931 mi of mapped National Forest System trail, of which 218 mi across 61 segments is designated for mountain bikes, typically open May–Nov. Class 1 e-bikes are designated on 131 segments (563 mi).

Reviewed by CanIBikeHere Editorial Team · Updated Oct 15, 2026

Where to stay near San Juan National Forest →

Of the 1,931 mi of mapped trail in San Juan National Forest, 11% — 218 mi across 61 bike-designated segments — is open to mountain bikes in USFS travel-management data.

Tread is overwhelmingly native dirt: USFS lists native material on 799 of 847 surfaced segments (94%).

On the USFS difficulty rating, advanced is the most common designation here — 537 of 845 rated segments (64%) — across all uses, not bikes alone.

The headline bike season runs May–Nov; individual segments vary, with 5 distinct season windows recorded across the sampled bike trails.

The longest single named bike segment in the data is Aspen Loop at 33.77 mi on native dirt, rated advanced by USFS.

Class 1 e-bikes are designated on 131 segments (563 mi), and 9 segments carry an ADA-accessibility flag in the same dataset.

Trail surface

Native Material799
Snow38
Crushed Aggregate Or Gravel6
Concrete2
Asphalt1

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

Class 2432
Class 3370
Class 437
Class 57
Class 11

11% 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
Aspen LoopNative Material	33.77	Native Material	—	—
Turkey CreekNative Material	19.7	Native Material	—	—
Hermosa CreekNative Material	19.4	Native Material	—	—
Sand CreekNative Material	14.91	Native Material	—	—
Bear CreekNative Material	14.03	Native Material	—	—
Piedra Stock DrNative Material	13.94	Native Material	—	—
Calico SouthNative Material	12.53	Native Material	—	—
Sage Hen LoopNative MaterialMay–Dec	12.48	Native Material	—	May–Dec
Little Bean CanyonNative MaterialJun–Oct	11.8	Native Material	—	Jun–Oct
MorrisonNative Material	11.65	Native Material	—	—
Stoner MesaNative MaterialJun–Oct	11.44	Native Material	—	Jun–Oct
West MancosNative Material	11.22	Native Material	—	—
Blackhawk - Co.TrailNative MaterialJun–Oct	11.01	Native Material	—	Jun–Oct
Boggy Lower LoopNative Material	10.9	Native Material	—	—
Boggy Upper LoopNative Material	9.55	Native Material	—	—
Devil MountainNative Material	8.74	Native Material	—	—
Pinkerton-FlagstaffNative Material	8.71	Native Material	—	—
Mcphee OverlookNative MaterialMay–Nov	8.65	Native Material	—	May–Nov
Treasure MountainNative Material	8.57	Native Material	—	—
BoggyNative MaterialJun–Oct	8.51	Native Material	—	Jun–Oct
Shush BekeehNative MaterialJun–Oct	8.49	Native Material	—	Jun–Oct
Mule MountainNative Material	8.48	Native Material	—	—
Lost ChickenNative MaterialApr–Nov	8.38	Native Material	—	Apr–Nov
Cascade CreekNative Material	8.1	Native Material	—	—
Priest GulchNative Material	7.89	Native Material	—	—

Every trail in San Juan National Forest

All 165 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 (84)

Gentle grade band (shallow average slope).

Piedra Stock Dr13.9 mi
Native Material, class 3Class 1 e-bike
Sage Hen Loop12.5 mi
Native Material, class 2, May–Decbike
Mcphee Overlook8.7 mi
Native Material, class 3, May–Novbike
Shush Bekeeh8.5 mi
Native Material, class 2, Jun–Octbike
Mule Mountain8.5 mi
Native Material, class 2Class 1 e-bike
Lost Chicken8.4 mi
Native Material, class 2, Apr–Novbike
Gopher6.8 mi
Native Material, class 3, May–Novbike
Tava Yaakwi6.5 mi
Native Material, class 2, Jun–Octbike
Willow Draw6.2 mi
Native Material, class 2Class 1 e-bike
Horse Creek5.5 mi
Native Material, class 2Class 1 e-bike
Catamount5.3 mi
Native Material, class 3, May–Novbike
Circle T Atv5.3 mi
Native Material, class 3Class 1 e-bike
Lange Canyon5.1 mi
Native Material, class 2Class 1 e-bike
Cade Mountain Atv4.9 mi
Native Material, class 3Class 1 e-bike
Bear Creek4.8 mi
Native Material, class 2Class 1 e-bike
Rocky Canyon4.5 mi
Native Material, class 2Class 1 e-bike
Blue Jay4.4 mi
Native Material, class 2, Apr–Novbike
Baldy Loop4.4 mi
Native Material, class 2Class 1 e-bike
Trail Spring Atv4.2 mi
Native Material, class 3Class 1 e-bike
Upper Rim4.1 mi
Native Material, class 3, May–Novbike
String Bean4 mi
Native Material, class 2, Jun–Octbike
Little Bull Creek4 mi
Native Material, class 2Class 1 e-bike
Loading Pen3.9 mi
Native Material, class 3Class 1 e-bike
Do Right3.8 mi
Native Material, class 3Class 1 e-bike
Bedrock Creek Ohv Trail3.8 mi
Native Material, class 3Class 1 e-bike
South Brockover Atv3.4 mi
Native Material, class 3Class 1 e-bike
First Notch 23.3 mi
Native Material, class 2Class 1 e-bike
Round Park3.3 mi
Native Material, class 3, May–Novbike
Mcneil East3.1 mi
Native Material, class 2, Jun–Octbike
Logchutes 23 mi
Native Material, class 3, Apr–Novbike
The 513 Connector2.9 mi
Native Material, class 2Class 1 e-bike
Neptune Ohv Trail2.9 mi
Native Material, class 3Class 1 e-bike
Ridge2.9 mi
Native Material, class 2, May–Novbike + e-bike
Horizon Loop2.9 mi
Native Material, class 2Class 1 e-bike
Boren Creek Ohv Trail2.8 mi
Native Material, class 3Class 1 e-bike
First Notch 12.6 mi
Native Material, class 2Class 1 e-bike
Clampett Mill2.5 mi
Native Material, class 2Class 1 e-bike
Porcupine Atv2.5 mi
Native Material, class 2Class 1 e-bike
Lower Rim2.4 mi
Native Material, class 3, May–Novbike
Aspen Run2.3 mi
Native Material, class 3, May–Novbike
Mcneil West2.3 mi
Native Material, class 2, Jun–Octbike
Black Mesa Ohv2.3 mi
Native Material, class 3Class 1 e-bike
Uncle Charlie2.2 mi
Native Material, class 2Class 1 e-bike
Golconda2.2 mi
Native Material, class 2Class 1 e-bike
Coyote Park South2.1 mi
Native Material, class 2Class 1 e-bike
First Notch 32.1 mi
Native Material, class 2Class 1 e-bike
Medicine Mine2 mi
Native Material, class 2Class 1 e-bike
Wolf Den Connector1.9 mi
Native Material, class 2Class 1 e-bike
Madden Creek Proper Ohv Trail1.9 mi
Native Material, class 3Class 1 e-bike
Basin Creek Ohv Trail1.8 mi
Native Material, class 3Class 1 e-bike
Hamlin1.8 mi
Native Material, class 2, Jun–Octbike
Mule Mtn. Spur 11.8 mi
Native Material, class 2Class 1 e-bike
Newt Jack1.7 mi
Native Material, class 3, May–Novbike
Monument Park Atv1.7 mi
Native Material, class 3Class 1 e-bike
Vallecito View1.7 mi
Native Material, class 3Class 1 e-bike
Box Canyon Spur1.7 mi
Native Material, class 2Class 1 e-bike
Arbogas Loop1.7 mi
Native Material, class 2Class 1 e-bike
Brockover1.5 mi
Native Material, class 3, May–Novbike
Dolph Kuss1.5 mi
Native Material, class 2, Jun–Octbike
Bedrock Creek Ohv Spur1.5 mi
Native Material, class 3Class 1 e-bike
Upper Little Bauer1.4 mi
Native Material, class 2, Apr–Novbike
Powerline1.4 mi
Native Material, class 3, May–Novbike
Mule Mtn. Spur 21.4 mi
Native Material, class 2Class 1 e-bike
Park Ave1.4 mi
Native Material, class 3, May–Novbike
Snowball Connector1.4 mi
Native Material, class 2Class 1 e-bike
Moonlick Connect1.3 mi
Native Material, class 2Class 1 e-bike
Stockdrive Atv1.2 mi
Native Material, class 3Class 1 e-bike
Lower Little Bauer1.2 mi
Native Material, class 2, Apr–Novbike
First Notch Connect1.1 mi
Native Material, class 2Class 1 e-bike
608 Connect1.1 mi
Native Material, class 2Class 1 e-bike
Turkey Creek1.1 mi
Native Material, class 2, Apr–Novbike
Skimmer1.1 mi
Native Material, class 2Class 1 e-bike
Cutover Atv1 mi
Native Material, class 3Class 1 e-bike
Pa Ya1 mi
Native Material, class 2, Jun–Octbike
Madden Creek Access Ohv0.9 mi
Native Material, class 3Class 1 e-bike
Arbogas0.9 mi
Native Material, class 2Class 1 e-bike
Rush Spur South0.9 mi
Native Material, class 2, Apr–Novbike
Jungle Connect0.9 mi
Native Material, class 2Class 1 e-bike
Black Draw0.8 mi
Crushed Aggregate Or Gravel, class 2Class 1 e-bike
Boggy Lookout0.7 mi
Native Material, class 3Class 1 e-bike
La Plata Canyon D Ohv0.7 mi
Native Material, class 3Class 1 e-bike
Hillside Connector0.6 mi
Native Material, class 3Class 1 e-bike
Creek0.5 mi
Native Material, class 3, May–Novbike
Chicken Little0.5 mi
Native Material, class 2, Apr–Novbike

Intermediate grade (25)

Moderate grade band.

Blackhawk - Co.Trail11 mi
Native Material, class 3, Jun–Octbike
Turkey Springs7.6 mi
Native Material, class 3, May–Novbike
Elk Creek5.7 mi
Native Material, class 2Class 1 e-bike
Aspen Spur5 mi
Native Material, class 2Class 1 e-bike
Logchutes 14.9 mi
Native Material, class 3, Apr–Novbike
Bull Creek4.7 mi
Native Material, class 3Class 1 e-bike
Ramparts Loop4.6 mi
Native Material, class 2Class 1 e-bike
Green Canyon4.5 mi
Native Material, class 2Class 1 e-bike
Ute Creek4.5 mi
Native Material, class 2Class 1 e-bike
West Fall Creek4.3 mi
Native Material, class 2Class 1 e-bike
Bear Creek Loop4.2 mi
Native Material, class 2Class 1 e-bike
Double G4.2 mi
Native Material, class 2Class 1 e-bike
Snow Ranch C4.1 mi
Native Material, class 2Class 1 e-bike
Starvation Creek4 mi
Native Material, class 2Class 1 e-bike
Logchutes 33.8 mi
Native Material, class 3, Apr–Novbike
Beri Atv3.4 mi
Native Material, class 3Class 1 e-bike
Old Gold Run3.2 mi
Native Material, class 2Class 1 e-bike
Westview Loop3 mi
Native Material, class 3, Apr–Novbike
Rio Grande Southern2.7 mi
Native Material, class 3, May–Decbike
Groundhog Ohv2.5 mi
Native Material, class 3Class 1 e-bike
Reservoir Canyon2.4 mi
Native Material, class 2Class 1 e-bike
Burnett Connector1.5 mi
Native Material, class 3, Jun–Decbike
Cliff Line0.9 mi
Native Material, class 3, Apr–Novbike
Black Goat0.9 mi
Native Material, class 3bike
North Fork0.5 mi
Native Material, class 2Class 1 e-bike

Advanced grade (55)

Steep grade band.

Aspen Loop33.8 mi
Native Material, class 3Class 1 e-bike
Turkey Creek19.7 mi
Native Material, class 2Class 1 e-bike
Hermosa Creek19.4 mi
Native Material, class 3Class 1 e-bike
Sand Creek14.9 mi
Native Material, class 2Class 1 e-bike
Bear Creek14 mi
Native Material, class 2Class 1 e-bike
Calico South12.5 mi
Native Material, class 3Class 1 e-bike
Little Bean Canyon11.8 mi
Native Material, class 2, Jun–Octbike
Morrison11.7 mi
Native Material, class 3Class 1 e-bike
Stoner Mesa11.4 mi
Native Material, class 3, Jun–Octbike + e-bike
West Mancos11.2 mi
Native Material, class 2Class 1 e-bike
Boggy Lower Loop10.9 mi
Native Material, class 3Class 1 e-bike
Boggy Upper Loop9.6 mi
Native Material, class 3Class 1 e-bike
Devil Mountain8.7 mi
Native Material, class 2Class 1 e-bike
Pinkerton-Flagstaff8.7 mi
Native Material, class 3Class 1 e-bike
Treasure Mountain8.6 mi
Native Material, class 2Class 1 e-bike
Boggy8.5 mi
Native Material, class 3, Jun–Octbike
Cascade Creek8.1 mi
Native Material, class 3Class 1 e-bike
Priest Gulch7.9 mi
Native Material, class 3Class 1 e-bike
Lower Ryman7.5 mi
Native Material, class 2, Jan–May, Jul–Decbike
East Fork7.4 mi
Native Material, class 3Class 1 e-bike
Devils Hole7.1 mi
Native Material, class 2Class 1 e-bike
Navajo Peak7 mi
Native Material, class 2Class 1 e-bike
Calico North6.8 mi
Native Material, class 3Class 1 e-bike
Chicken Creek6.8 mi
Native Material, class 2Class 1 e-bike
Box Canyon6.8 mi
Native Material, class 2Class 1 e-bike
Willow Divide Ohv6.8 mi
Native Material, class 2Class 1 e-bike
Dutch Creek6.1 mi
Native Material, class 3Class 1 e-bike
Italian Canyon5.9 mi
Native Material, class 2, Jun–Octbike
Eagle Peak5.9 mi
Native Material, class 3Class 1 e-bike
Snow Springs5.8 mi
Native Material, class 2Class 1 e-bike
Johnny Bull5.7 mi
Native Material, class 3Class 1 e-bike
Corral Draw5.6 mi
Native Material, class 3, May–Novbike + e-bike
Maverick5.4 mi
Native Material, class 2, Jun–Octbike
Rough Canyon4.8 mi
Native Material, class 3Class 1 e-bike
Stoner Creek4.6 mi
Native Material, class 2Class 1 e-bike
Salt Creek4.3 mi
Native Material, class 2, Jun–Octbike
Jones Creek4.2 mi
Native Material, class 3Class 1 e-bike
Grindstone4.1 mi
Native Material, class 3Class 1 e-bike
West Cross4.1 mi
Native Material, class 3, May–Novbike
Bc Rim4 mi
Native Material, class 3Class 1 e-bike
Columbine Lake3.3 mi
Native Material, class 2Class 1 e-bike
Rim3.2 mi
Native Material, class 2Class 1 e-bike
Runlett Park3.1 mi
Native Material, class 3Class 1 e-bike
Circle2.6 mi
Native Material, class 2, Jun–Octbike
Middle Mountain2.3 mi
Native Material, class 2Class 1 e-bike
Gold Run2.3 mi
Native Material, class 3Class 1 e-bike
Dark Canyon2.3 mi
Native Material, class 2Class 1 e-bike
Connection2 mi
Native Material, class 3Class 1 e-bike
Chris Mountain1.8 mi
Native Material, class 2Class 1 e-bike
Cottonwood Connector1.7 mi
Native Material, class 3Class 1 e-bike
Doc Lowell1.4 mi
Native Material, class 2Class 1 e-bike
East Twin Springs1.4 mi
Native Material, class 3Class 1 e-bike
Coyote Park1 mi
Native Material, class 2Class 1 e-bike
Sauls Creek1 mi
Native Material, class 2, May–Novbike
West Twin Springs1 mi
Native Material, class 3Class 1 e-bike

Grade not recorded (1)

No grade band recorded in the USFS data.

Cutthroat6 mi
Native Material, class 3, May–Novbike + e-bike

CSV

San Juan National Forest bike-legal trail list (CSV)

Download all 165 bike- and Class 1 e-bike-designated trails in San Juan National Forest — name, miles, surface, grade, season, and e-bike class per trail, straight from USFS data.

E-bikes in San Juan National Forest

Class 1 on 131 segments · Class 2 on 131 · Class 3 on 131. See full e-bike rules for San Juan National Forest →

Where it is

Approximate center of San Juan 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 San Juan National Forest?: San Juan National Forest earns a Bike Access Grade of C: 29% of its rideable trail miles are open to mountain bikes, with Class-1 e-bike access on part of the network. Mixed — bikes are open on a meaningful share of rideable trails, but many are e-bike-only or discouraged.
How many miles of mountain bike trail are in San Juan National Forest?: San Juan National Forest has about 218 mi of bike-designated trail across 61 segments, out of 1,931 mi of total National Forest System trail.
What is the riding season in San Juan National Forest?: Most bike-designated trails in San Juan National Forest carry a May–Nov season in USFS data; higher-elevation trails clear later.
Are e-bikes allowed in San Juan National Forest?: Only where designated. Class 1 e-bikes are recorded on 131 segments. See the e-bike rules page for the class-by-class breakdown.

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