USFS National Forest System Trails · Colorado · Updated June 2026
San Juan National Forest Mountain Bike Trails
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).
What the USFS data shows for 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 Loop | 33.77 | Native Material | — | — |
| Turkey Creek | 19.7 | Native Material | — | — |
| Hermosa Creek | 19.4 | Native Material | — | — |
| Sand Creek | 14.91 | Native Material | — | — |
| Bear Creek | 14.03 | Native Material | — | — |
| Piedra Stock Dr | 13.94 | Native Material | — | — |
| Calico South | 12.53 | Native Material | — | — |
| Sage Hen Loop | 12.48 | Native Material | — | May–Dec |
| Little Bean Canyon | 11.8 | Native Material | — | Jun–Oct |
| Morrison | 11.65 | Native Material | — | — |
| Stoner Mesa | 11.44 | Native Material | — | Jun–Oct |
| West Mancos | 11.22 | Native Material | — | — |
| Blackhawk - Co.Trail | 11.01 | Native Material | — | Jun–Oct |
| Boggy Lower Loop | 10.9 | Native Material | — | — |
| Boggy Upper Loop | 9.55 | Native Material | — | — |
| Devil Mountain | 8.74 | Native Material | — | — |
| Pinkerton-Flagstaff | 8.71 | Native Material | — | — |
| Mcphee Overlook | 8.65 | Native Material | — | May–Nov |
| Treasure Mountain | 8.57 | Native Material | — | — |
| Boggy | 8.51 | Native Material | — | Jun–Oct |
| Shush Bekeeh | 8.49 | Native Material | — | Jun–Oct |
| Mule Mountain | 8.48 | Native Material | — | — |
| Lost Chicken | 8.38 | Native Material | — | Apr–Nov |
| Cascade Creek | 8.1 | Native Material | — | — |
| Priest Gulch | 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 · Class 1 e-bike
Native Material · class 3
- Sage Hen Loop12.5 mi · bike
Native Material · class 2 · May–Dec
- Mcphee Overlook8.7 mi · bike
Native Material · class 3 · May–Nov
- Shush Bekeeh8.5 mi · bike
Native Material · class 2 · Jun–Oct
- Mule Mountain8.5 mi · Class 1 e-bike
Native Material · class 2
- Lost Chicken8.4 mi · bike
Native Material · class 2 · Apr–Nov
- Gopher6.8 mi · bike
Native Material · class 3 · May–Nov
- Tava Yaakwi6.5 mi · bike
Native Material · class 2 · Jun–Oct
- Willow Draw6.2 mi · Class 1 e-bike
Native Material · class 2
- Horse Creek5.5 mi · Class 1 e-bike
Native Material · class 2
- Catamount5.3 mi · bike
Native Material · class 3 · May–Nov
- Circle T Atv5.3 mi · Class 1 e-bike
Native Material · class 3
- Lange Canyon5.1 mi · Class 1 e-bike
Native Material · class 2
- Cade Mountain Atv4.9 mi · Class 1 e-bike
Native Material · class 3
- Bear Creek4.8 mi · Class 1 e-bike
Native Material · class 2
- Rocky Canyon4.5 mi · Class 1 e-bike
Native Material · class 2
- Blue Jay4.4 mi · bike
Native Material · class 2 · Apr–Nov
- Baldy Loop4.4 mi · Class 1 e-bike
Native Material · class 2
- Trail Spring Atv4.2 mi · Class 1 e-bike
Native Material · class 3
- Upper Rim4.1 mi · bike
Native Material · class 3 · May–Nov
- String Bean4 mi · bike
Native Material · class 2 · Jun–Oct
- Little Bull Creek4 mi · Class 1 e-bike
Native Material · class 2
- Loading Pen3.9 mi · Class 1 e-bike
Native Material · class 3
- Do Right3.8 mi · Class 1 e-bike
Native Material · class 3
- Bedrock Creek Ohv Trail3.8 mi · Class 1 e-bike
Native Material · class 3
- South Brockover Atv3.4 mi · Class 1 e-bike
Native Material · class 3
- First Notch 23.3 mi · Class 1 e-bike
Native Material · class 2
- Round Park3.3 mi · bike
Native Material · class 3 · May–Nov
- Mcneil East3.1 mi · bike
Native Material · class 2 · Jun–Oct
- Logchutes 23 mi · bike
Native Material · class 3 · Apr–Nov
- The 513 Connector2.9 mi · Class 1 e-bike
Native Material · class 2
- Neptune Ohv Trail2.9 mi · Class 1 e-bike
Native Material · class 3
- Ridge2.9 mi · bike + e-bike
Native Material · class 2 · May–Nov
- Horizon Loop2.9 mi · Class 1 e-bike
Native Material · class 2
- Boren Creek Ohv Trail2.8 mi · Class 1 e-bike
Native Material · class 3
- First Notch 12.6 mi · Class 1 e-bike
Native Material · class 2
- Clampett Mill2.5 mi · Class 1 e-bike
Native Material · class 2
- Porcupine Atv2.5 mi · Class 1 e-bike
Native Material · class 2
- Lower Rim2.4 mi · bike
Native Material · class 3 · May–Nov
- Aspen Run2.3 mi · bike
Native Material · class 3 · May–Nov
- Mcneil West2.3 mi · bike
Native Material · class 2 · Jun–Oct
- Black Mesa Ohv2.3 mi · Class 1 e-bike
Native Material · class 3
- Uncle Charlie2.2 mi · Class 1 e-bike
Native Material · class 2
- Golconda2.2 mi · Class 1 e-bike
Native Material · class 2
- Coyote Park South2.1 mi · Class 1 e-bike
Native Material · class 2
- First Notch 32.1 mi · Class 1 e-bike
Native Material · class 2
- Medicine Mine2 mi · Class 1 e-bike
Native Material · class 2
- Wolf Den Connector1.9 mi · Class 1 e-bike
Native Material · class 2
- Madden Creek Proper Ohv Trail1.9 mi · Class 1 e-bike
Native Material · class 3
- Basin Creek Ohv Trail1.8 mi · Class 1 e-bike
Native Material · class 3
- Hamlin1.8 mi · bike
Native Material · class 2 · Jun–Oct
- Mule Mtn. Spur 11.8 mi · Class 1 e-bike
Native Material · class 2
- Newt Jack1.7 mi · bike
Native Material · class 3 · May–Nov
- Monument Park Atv1.7 mi · Class 1 e-bike
Native Material · class 3
- Vallecito View1.7 mi · Class 1 e-bike
Native Material · class 3
- Box Canyon Spur1.7 mi · Class 1 e-bike
Native Material · class 2
- Arbogas Loop1.7 mi · Class 1 e-bike
Native Material · class 2
- Brockover1.5 mi · bike
Native Material · class 3 · May–Nov
- Dolph Kuss1.5 mi · bike
Native Material · class 2 · Jun–Oct
- Bedrock Creek Ohv Spur1.5 mi · Class 1 e-bike
Native Material · class 3
- Upper Little Bauer1.4 mi · bike
Native Material · class 2 · Apr–Nov
- Powerline1.4 mi · bike
Native Material · class 3 · May–Nov
- Mule Mtn. Spur 21.4 mi · Class 1 e-bike
Native Material · class 2
- Park Ave1.4 mi · bike
Native Material · class 3 · May–Nov
- Snowball Connector1.4 mi · Class 1 e-bike
Native Material · class 2
- Moonlick Connect1.3 mi · Class 1 e-bike
Native Material · class 2
- Stockdrive Atv1.2 mi · Class 1 e-bike
Native Material · class 3
- Lower Little Bauer1.2 mi · bike
Native Material · class 2 · Apr–Nov
- First Notch Connect1.1 mi · Class 1 e-bike
Native Material · class 2
- 608 Connect1.1 mi · Class 1 e-bike
Native Material · class 2
- Turkey Creek1.1 mi · bike
Native Material · class 2 · Apr–Nov
- Skimmer1.1 mi · Class 1 e-bike
Native Material · class 2
- Cutover Atv1 mi · Class 1 e-bike
Native Material · class 3
- Pa Ya1 mi · bike
Native Material · class 2 · Jun–Oct
- Madden Creek Access Ohv0.9 mi · Class 1 e-bike
Native Material · class 3
- Arbogas0.9 mi · Class 1 e-bike
Native Material · class 2
- Rush Spur South0.9 mi · bike
Native Material · class 2 · Apr–Nov
- Jungle Connect0.9 mi · Class 1 e-bike
Native Material · class 2
- Black Draw0.8 mi · Class 1 e-bike
Crushed Aggregate Or Gravel · class 2
- Boggy Lookout0.7 mi · Class 1 e-bike
Native Material · class 3
- La Plata Canyon D Ohv0.7 mi · Class 1 e-bike
Native Material · class 3
- Hillside Connector0.6 mi · Class 1 e-bike
Native Material · class 3
- Creek0.5 mi · bike
Native Material · class 3 · May–Nov
- Chicken Little0.5 mi · bike
Native Material · class 2 · Apr–Nov
Intermediate grade (25)
Moderate grade band.
- Blackhawk - Co.Trail11 mi · bike
Native Material · class 3 · Jun–Oct
- Turkey Springs7.6 mi · bike
Native Material · class 3 · May–Nov
- Elk Creek5.7 mi · Class 1 e-bike
Native Material · class 2
- Aspen Spur5 mi · Class 1 e-bike
Native Material · class 2
- Logchutes 14.9 mi · bike
Native Material · class 3 · Apr–Nov
- Bull Creek4.7 mi · Class 1 e-bike
Native Material · class 3
- Ramparts Loop4.6 mi · Class 1 e-bike
Native Material · class 2
- Green Canyon4.5 mi · Class 1 e-bike
Native Material · class 2
- Ute Creek4.5 mi · Class 1 e-bike
Native Material · class 2
- West Fall Creek4.3 mi · Class 1 e-bike
Native Material · class 2
- Bear Creek Loop4.2 mi · Class 1 e-bike
Native Material · class 2
- Double G4.2 mi · Class 1 e-bike
Native Material · class 2
- Snow Ranch C4.1 mi · Class 1 e-bike
Native Material · class 2
- Starvation Creek4 mi · Class 1 e-bike
Native Material · class 2
- Logchutes 33.8 mi · bike
Native Material · class 3 · Apr–Nov
- Beri Atv3.4 mi · Class 1 e-bike
Native Material · class 3
- Old Gold Run3.2 mi · Class 1 e-bike
Native Material · class 2
- Westview Loop3 mi · bike
Native Material · class 3 · Apr–Nov
- Rio Grande Southern2.7 mi · bike
Native Material · class 3 · May–Dec
- Groundhog Ohv2.5 mi · Class 1 e-bike
Native Material · class 3
- Reservoir Canyon2.4 mi · Class 1 e-bike
Native Material · class 2
- Burnett Connector1.5 mi · bike
Native Material · class 3 · Jun–Dec
- Cliff Line0.9 mi · bike
Native Material · class 3 · Apr–Nov
- Black Goat0.9 mi · bike
Native Material · class 3
- North Fork0.5 mi · Class 1 e-bike
Native Material · class 2
Advanced grade (55)
Steep grade band.
- Aspen Loop33.8 mi · Class 1 e-bike
Native Material · class 3
- Turkey Creek19.7 mi · Class 1 e-bike
Native Material · class 2
- Hermosa Creek19.4 mi · Class 1 e-bike
Native Material · class 3
- Sand Creek14.9 mi · Class 1 e-bike
Native Material · class 2
- Bear Creek14 mi · Class 1 e-bike
Native Material · class 2
- Calico South12.5 mi · Class 1 e-bike
Native Material · class 3
- Little Bean Canyon11.8 mi · bike
Native Material · class 2 · Jun–Oct
- Morrison11.7 mi · Class 1 e-bike
Native Material · class 3
- Stoner Mesa11.4 mi · bike + e-bike
Native Material · class 3 · Jun–Oct
- West Mancos11.2 mi · Class 1 e-bike
Native Material · class 2
- Boggy Lower Loop10.9 mi · Class 1 e-bike
Native Material · class 3
- Boggy Upper Loop9.6 mi · Class 1 e-bike
Native Material · class 3
- Devil Mountain8.7 mi · Class 1 e-bike
Native Material · class 2
- Pinkerton-Flagstaff8.7 mi · Class 1 e-bike
Native Material · class 3
- Treasure Mountain8.6 mi · Class 1 e-bike
Native Material · class 2
- Boggy8.5 mi · bike
Native Material · class 3 · Jun–Oct
- Cascade Creek8.1 mi · Class 1 e-bike
Native Material · class 3
- Priest Gulch7.9 mi · Class 1 e-bike
Native Material · class 3
- Lower Ryman7.5 mi · bike
Native Material · class 2 · Jan–May, Jul–Dec
- East Fork7.4 mi · Class 1 e-bike
Native Material · class 3
- Devils Hole7.1 mi · Class 1 e-bike
Native Material · class 2
- Navajo Peak7 mi · Class 1 e-bike
Native Material · class 2
- Calico North6.8 mi · Class 1 e-bike
Native Material · class 3
- Chicken Creek6.8 mi · Class 1 e-bike
Native Material · class 2
- Box Canyon6.8 mi · Class 1 e-bike
Native Material · class 2
- Willow Divide Ohv6.8 mi · Class 1 e-bike
Native Material · class 2
- Dutch Creek6.1 mi · Class 1 e-bike
Native Material · class 3
- Italian Canyon5.9 mi · bike
Native Material · class 2 · Jun–Oct
- Eagle Peak5.9 mi · Class 1 e-bike
Native Material · class 3
- Snow Springs5.8 mi · Class 1 e-bike
Native Material · class 2
- Johnny Bull5.7 mi · Class 1 e-bike
Native Material · class 3
- Corral Draw5.6 mi · bike + e-bike
Native Material · class 3 · May–Nov
- Maverick5.4 mi · bike
Native Material · class 2 · Jun–Oct
- Rough Canyon4.8 mi · Class 1 e-bike
Native Material · class 3
- Stoner Creek4.6 mi · Class 1 e-bike
Native Material · class 2
- Salt Creek4.3 mi · bike
Native Material · class 2 · Jun–Oct
- Jones Creek4.2 mi · Class 1 e-bike
Native Material · class 3
- Grindstone4.1 mi · Class 1 e-bike
Native Material · class 3
- West Cross4.1 mi · bike
Native Material · class 3 · May–Nov
- Bc Rim4 mi · Class 1 e-bike
Native Material · class 3
- Columbine Lake3.3 mi · Class 1 e-bike
Native Material · class 2
- Rim3.2 mi · Class 1 e-bike
Native Material · class 2
- Runlett Park3.1 mi · Class 1 e-bike
Native Material · class 3
- Circle2.6 mi · bike
Native Material · class 2 · Jun–Oct
- Middle Mountain2.3 mi · Class 1 e-bike
Native Material · class 2
- Gold Run2.3 mi · Class 1 e-bike
Native Material · class 3
- Dark Canyon2.3 mi · Class 1 e-bike
Native Material · class 2
- Connection2 mi · Class 1 e-bike
Native Material · class 3
- Chris Mountain1.8 mi · Class 1 e-bike
Native Material · class 2
- Cottonwood Connector1.7 mi · Class 1 e-bike
Native Material · class 3
- Doc Lowell1.4 mi · Class 1 e-bike
Native Material · class 2
- East Twin Springs1.4 mi · Class 1 e-bike
Native Material · class 3
- Coyote Park1 mi · Class 1 e-bike
Native Material · class 2
- Sauls Creek1 mi · bike
Native Material · class 2 · May–Nov
- West Twin Springs1 mi · Class 1 e-bike
Native Material · class 3
Grade not recorded (1)
No grade band recorded in the USFS data.
- Cutthroat6 mi · bike + e-bike
Native Material · class 3 · May–Nov
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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Where to stay near San Juan National Forest
Cabins, lodges, and campgrounds near San Juan National Forest in Colorado — compare places to stay for a mountain-bike trip.
Top-rated places to stay near San Juan National Forest
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