USFS National Forest System Trails · Colorado · Updated June 2026
Arapaho and Roosevelt National Forests Mountain Bike Trails
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).
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.
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
| Trail | Miles | Surface | Trail class | Bike season |
|---|---|---|---|---|
| Flowers | 18.51 | Native Material | — | Year-round |
| High Lonesome | 18.15 | Native Material | — | Year-round |
| Buchanan Pass | 15.61 | Native Material | — | Year-round |
| Cub Creek | 15.18 | Native Material | — | Year-round |
| Sourdough | 14.64 | Native Material | — | Year-round |
| Bard Creek | 10.5 | Native Material | — | Year-round |
| Danner Pass | 10 | Native Material | — | Year-round |
| Lookout Mountain | 8.26 | Native Material | — | Year-round |
| West Stillwater | 8.17 | Native Material | — | Jun–Nov |
| Crosier Mountain | 8 | Native Material | — | Year-round |
| Strawberry Creek | 7.84 | Native Material | — | Jun–Nov |
| Pawnee Pass | 7.76 | Native Material | — | Year-round |
| Jones Pass | 7.36 | Native Material | — | Year-round |
| Granite Ridge | 7.2 | Native Material | — | Jul–Oct |
| Williams Peak | 6.76 | Native Material | — | Jun–Nov |
| Richey Creek | 6.67 | Native Material | — | Jun–Nov |
| St Vrain Mountain | 6.65 | Native Material | — | Year-round |
| Hewlett Gulch | 6.5 | Native Material | — | Year-round |
| M. Walter Pesman | 6.49 | Native Material | — | Jun–Nov |
| Summit Flats | 6.33 | Native Material | — | Jun–Nov |
| Elk Mountain | 6.19 | Native Material | — | Jun–Nov |
| Mount Flora | 6.02 | Native Material | — | Year-round |
| Hells Hole | 5.96 | Native Material | — | Year-round |
| Roaring Creek | 5.91 | Native Material | — | Year-round |
| Resthouse Meadows | 5.89 | Native 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).
- Cub Creek15.2 mi · bike
Native Material · class 2
- Jones Pass7.4 mi · bike
Native Material · class 2
- Granite Ridge7.2 mi · bike
Native Material · class 2 · Jul–Oct
- Richey Creek6.7 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Mount Flora6 mi · bike
Native Material · class 2
- Homestead Meadows5.6 mi · bike
Native Material · class 3
- Bakerville-Loveland4.7 mi · bike
Asphalt · class 5
- Elk Creek Loop4 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Elkhorn Creek4 mi · bike
Native Material · class 2 · Jul–Oct
- Grace Creek3.7 mi · bike + e-bike
Native Material · class 2
- Spruce 'Em Up Jack3.3 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Miller Fork3.2 mi · bike
Native Material · class 2
- Lady Moon2.8 mi · bike
Native Material · class 3 · Jul–Oct
- Frog Pond2.7 mi · bike
Native Material · class 2
- Chainsaw2.7 mi · bike
Native Material · class 3 · Jun–Nov
- Upper Elk Creek2.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Wolverine Bypass2.5 mi · bike
Native Material · class 2
- Williams Fork Boardwalk2.4 mi · bike
Native Material · class 1
- Iko2.3 mi · bike
Native Material · class 3 · Jun–Nov
- Drowsy Water2.3 mi · bike
Native Material · class 2 · Jun–Nov
- Columbine2.3 mi · bike
Native Material · class 2
- Buttes2.2 mi · bike
Native Material · class 3
- Moffat2.2 mi · bike
Native Material · class 2 · Jun–Nov
- Molly Moon2.1 mi · bike
Native Material · class 2 · Jul–Oct
- Keyser Ridge Loop1.8 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Berthoud Pass West1.8 mi · bike
Native Material · class 3
- Backscratch1.7 mi · bike
Native Material · class 2 · Jun–Nov
- Cascade Chute1.7 mi · bike
Native Material · class 2 · Jun–Nov
- Lady Moon Loop1.7 mi · bike
Native Material · class 3 · Jul–Oct
- D-21.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- D-41.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Leap Frog1.6 mi · bike
Native Material · class 3 · Jun–Nov
- Ditch1.5 mi · bike
Native Material · class 3 · Jun–Nov
- East Dowdy Lake1.5 mi · bike
Native Material · class 2
- Doe Creek West1.5 mi · bike
Native Material · class 3 · Jun–Nov
- Mcqueary Ridge1.4 mi · bike
Native Material · class 2 · Jun–Nov
- Maxwell Falls Loop1.3 mi · bike
Native Material · class 3
- Lower Soda Pass1.3 mi · bike
Native Material · class 3 · Jun–Nov
- Jacks Gulch Cg Loop Trail1.2 mi · bike
Native Material · class 3
- Tbd1.1 mi · bike
Native Material · class 3
- Elk Wallow1.1 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Stanley Cdt Spur1.1 mi · bike
Native Material · class 3
- Creekside Loop1.1 mi · bike
Native Material · class 3 · Jun–Nov
- Twisted Ankle1.1 mi · bike
Native Material · class 3 · Jun–Nov
- Colorado River Trail1.1 mi · bike
Native Material · class 2 · Jun–Nov
- Upper Iko1 mi · bike
Native Material · class 3 · Jun–Nov
- D-31 mi · bike
Native Material · class 3 · Jun–Nov
- Columbine Ridge0.9 mi · bike
Native Material · class 2
- Fraser River0.9 mi · bike
Asphalt · class 5 · Jun–Nov
- Torreys Summit0.9 mi · bike
Native Material · class 3
- Doe Creek East0.8 mi · bike
Native Material · class 3 · Jun–Nov
- Winterwoods0.8 mi · bike
Native Material · class 3 · Jun–Nov
- Nw Haul Road Trails0.8 mi · bike
Native Material · class 3
- Paradise Creek0.8 mi · bike
Native Material · class 2 · Jun–Nov
- Irvin Homestead0.8 mi · bike
Native Material · class 2
- Engert Homestead0.7 mi · bike
Native Material · class 2
- Columbine North Loop0.7 mi · bike
Native Material · class 2
- Eagles Perch0.7 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Crosstrails0.7 mi · bike
Native Material · class 3 · Jun–Nov
- Lost Lake0.6 mi · bike
Native Material · class 2 · Jun–Nov
- Hill Homestead0.6 mi · bike
Native Material · class 2
- Disappointment Falls0.6 mi · bike
Native Material · class 2 · Jul–Oct
- Divide0.6 mi · bike
Native Material · class 2
- Aqueduct Spur0.6 mi · bike
Native Material · class 3
- Connector0.6 mi · bike
Native Material · class 3
- Bull Mtn Annex0.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
Intermediate grade (11)
Moderate grade band.
- Bard Creek10.5 mi · bike
Native Material · class 2
- Summit Flats6.3 mi · bike
Native Material · class 2 · Jun–Nov
- Bulwark Ridge5.2 mi · bike
Native Material · class 2
- Lower Dadd Gulch3.5 mi · bike
Native Material · class 2
- Pinball Ridge3 mi · bike
Native Material · class 3 · Jun–Nov
- Barbour Fork2.1 mi · bike
Native Material · class 3
- Silver Dollar Lake2 mi · bike
Native Material · class 2
- Chief Mountain1.4 mi · bike
Native Material · class 3
- Arrow0.9 mi · bike
Native Material · class 3 · Jun–Nov
- Viewpoint0.9 mi · bike
Native Material · class 2 · Jun–Nov
- Box Hollow0.7 mi · bike
Native Material · class 2 · Jul–Oct
Advanced grade (148)
Steep grade band.
- Flowers18.5 mi · bike
Native Material · class 2
- High Lonesome18.2 mi · bike
Native Material · class 2
- Buchanan Pass15.6 mi · bike
Native Material · class 2
- Sourdough14.6 mi · bike
Native Material · class 2
- Danner Pass10 mi · bike + e-bike
Native Material · class 2
- Lookout Mountain8.3 mi · bike + e-bike
Native Material · class 2
- Crosier Mountain8 mi · bike
Native Material · class 2
- Strawberry Creek7.8 mi · bike
Native Material · class 2 · Jun–Nov
- Pawnee Pass7.8 mi · bike
Native Material · class 2
- Williams Peak6.8 mi · bike
Native Material · class 2 · Jun–Nov
- St Vrain Mountain6.7 mi · bike
Native Material · class 2
- Hewlett Gulch6.5 mi · bike
Native Material · class 3
- M. Walter Pesman6.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Elk Mountain6.2 mi · bike
Native Material · class 3 · Jun–Nov
- Hells Hole6 mi · bike
Native Material · class 2
- Roaring Creek5.9 mi · bike
Native Material · class 2
- Resthouse Meadows5.9 mi · bike
Native Material · class 2
- South Saint Vrain5.8 mi · bike
Native Material · class 3
- Tipperary Creek5.7 mi · bike
Native Material · class 3 · Jun–Nov
- Tim'S Trail5.4 mi · bike + e-bike
Native Material · class 2
- Young Gulch5.3 mi · bike
Native Material · class 3
- No-See-Um5.3 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- North Lone Pine4.9 mi · bike
Native Material · class 3
- Willow Creek Pass4.9 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Killpecker4.4 mi · bike + e-bike
Native Material · class 2
- Warren Gulch4.4 mi · bike
Native Material · class 3
- King Lake4.3 mi · bike
Native Material · class 2
- Horseshoe-Sulphur4.1 mi · bike
Native Material · class 2 · Jun–Nov
- Chicago Lakes4.1 mi · bike
Native Material · class 3
- Buffalo Creek4 mi · bike
Native Material · class 2 · Jun–Nov
- Strawberry Bench3.9 mi · bike
Native Material · class 2 · Jun–Nov
- Mount Margaret3.8 mi · bike
Native Material · class 3
- Illinois Pass3.7 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Gilsonite 23.7 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Blue Ridge3.7 mi · bike
Native Material · class 2 · Jun–Nov
- Grays Peak3.6 mi · bike
Native Material · class 3
- Bull Mtn3.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Broken Thumb3.6 mi · bike + e-bike
Native Material · class 2 · Jun–Nov
- Lion Gulch3.5 mi · bike
Native Material · class 3
- Wtb3.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Swamp Creek3.4 mi · bike + e-bike
Native Material · class 2
- Doe Creek3.4 mi · bike
Native Material · class 3 · Jun–Nov
- Jim Creek3.3 mi · bike
Native Material · class 2 · Jun–Nov
- Herman Gulch3.2 mi · bike
Native Material · class 3
- Arapaho Pass3.1 mi · bike
Native Material · class 3
- North Supply Loop3.1 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Coffintop3.1 mi · bike
Native Material · class 1
- Caribou3 mi · bike
Native Material · class 2 · Jun–Nov
- Mount Thorodin2.9 mi · bike
Native Material · class 3
- Creekside2.8 mi · bike
Native Material · class 3 · Jun–Nov
- Hobbit2.8 mi · bike
Native Material · class 3
- South Fork Loop2.8 mi · bike
Native Material · class 3 · Jun–Nov
- Little Raven2.7 mi · bike
Native Material · class 2
- Trail Creek2.6 mi · bike
Native Material · class 2 · Jun–Nov
- Beaver Line2.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Rogers Pass2.5 mi · bike
Native Material · class 2 · Jun–Nov
- Strawberry West2.5 mi · bike
Native Material · class 2 · Jun–Nov
- Mitchell Lake2.4 mi · bike
Native Material · class 3
- Pearl Creek2.4 mi · bike
Native Material · class 3
- Middle Supply2.4 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Cmc (South)2.4 mi · bike
Native Material · class 3
- Maxwell Falls2.4 mi · bike
Native Material · class 3
- Boiling Gulch2.4 mi · bike
Native Material · class 3
- Aqueduct2.3 mi · bike
Native Material · class 3
- Park Creek2.3 mi · bike
Native Material · class 2
- Waldrop (North)2.3 mi · bike
Native Material · class 3
- North Sheep Mountain2.3 mi · bike
Native Material · class 2
- Jenny Creek2.2 mi · Class 1 e-bike
Native Material · class 3
- Watrous Gulch2.2 mi · bike
Native Material · class 3
- Wolverine2.2 mi · bike
Native Material · class 2 · Jun–Nov
- Guinn Mountain2.1 mi · bike
Native Material · class 2
- Soda Pass2 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Blizzard Pass1.9 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Ceran St. Vrain1.9 mi · bike
Native Material · class 3
- Coulson Gulch1.9 mi · bike
Native Material · class 2
- Deer Ridge1.9 mi · bike
Native Material · class 2
- Strawberry Lake1.8 mi · bike
Native Material · class 2 · Jun–Nov
- Lower Gilsonite1.8 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Parkview1.7 mi · bike
Native Material · class 2 · Jun–Nov
- Devil'S Canyon1.7 mi · bike
Native Material · class 2
- Bright Extension1.7 mi · bike
Native Material · class 2
- Bright1.7 mi · bike
Native Material · class 2
- Hassell Lake1.6 mi · bike + e-bike
Native Material · class 3
- Burnout Loop1.6 mi · bike
Native Material · class 3 · Jun–Nov
- Blue Sky1.6 mi · bike
Native Material · class 3 · Jun–Nov
- Camway1.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Serenity1.5 mi · bike
Native Material · class 3 · Jun–Nov
- Blue Ridge1.4 mi · bike
Native Material · class 3 · Jun–Nov
- Wapiti1.4 mi · bike
Native Material · class 2
- Devils Thumb Bypass1.4 mi · bike
Native Material · class 2
- Reroot1.3 mi · bike
Native Material · class 3
- School Bus1.3 mi · bike
Native Material · class 3
- Taylor Mountain1.2 mi · bike
Native Material · class 2
- Kavanaugh Gulley1.2 mi · bike
Native Material · class 3
- Oxbow1.2 mi · bike
Native Material · class 3
- Hawkins Surguine Spur1.1 mi · bike
Native Material · class 3
- Burn1.1 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Hawkins Surguine Spur1 mi · bike
Native Material · class 3
- Tungsten Spur1 mi · bike
Native Material · class 3
- Elk Meadow1 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Radial By-Pass1 mi · bike
Native Material · class 2 · Jun–Nov
- Green Ridge0.9 mi · bike
Native Material · class 3 · Jun–Nov
- Indian0.9 mi · bike
Native Material · class 2
- Forsythe Canyon0.9 mi · bike
Native Material · class 3
- Devils Canyon Spur0.9 mi · bike
Native Material · class 2
- Rainbow Lakes0.9 mi · bike
Native Material · class 3
- Ice Hill0.9 mi · bike
Native Material · class 3 · Jun–Nov
- Ne Haul Road Trails0.9 mi · bike
Native Material · class 3
- Lower Cherokee0.9 mi · bike
Native Material · class 3 · Jun–Nov
- Spruce Gulch Single Track0.9 mi · Class 1 e-bike
Native Material · class 3
- Danner Pass Cutoff0.9 mi · bike
Native Material · class 2
- Canyon Rim Single Track0.8 mi · bike
Native Material
- Fox Creek0.8 mi · bike
Native Material · class 2
- Reynolds Ranch0.8 mi · bike
Native Material · class 3
- East Elk Creek0.8 mi · bike
Native Material · class 3 · Jun–Nov
- Baughman'S Gulley Single Track0.8 mi · Class 1 e-bike
Native Material · class 3
- Gilsonite 30.8 mi · bike
Native Material · class 3 · Jun–Nov
- After Burn0.8 mi · bike
Native Material · class 3 · Jun–Nov
- South Sheep Mtn0.8 mi · bike
Native Material · class 2
- Baptiste0.8 mi · bike
Native Material · class 2
- Fourmile Creek0.8 mi · bike
Native Material · class 2
- Beaver Reservoir Cutoff0.7 mi · bike
Native Material · class 2
- N. Sheep Mtn. Cutoff0.7 mi · bike
Native Material · class 2
- -- What Trail Is This? --0.7 mi · bike
Native Material · class 3
- Fairview Peak Single Track0.7 mi · bike
Native Material · class 3
- Wall Of Death Single Track0.7 mi · Class 1 e-bike
Native Material · class 3
- Upper Cherokee0.7 mi · bike
Native Material · class 3 · Jun–Nov
- Trail Creek Spur0.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Reynolds Ranch Spur0.6 mi · bike
Native Material · class 3
- Crosier Mountain H-G0.6 mi · bike
Native Material · class 2
- Kirkegard Single Track0.6 mi · Class 1 e-bike
Native Material · class 3
- Reynolds Ranch Spur0.6 mi · bike
Native Material · class 3
- Little Gravel Bypass0.6 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Gilsonite0.6 mi · bike
Native Material · class 3 · Jun–Nov
- Brainard Lake Cutoff0.6 mi · bike
Native Material · class 3
- Baughman'S Saddle Single Track0.6 mi · Class 1 e-bike
Native Material · class 3
- Nw Haul Road Trails0.6 mi · bike
Native Material · class 3
- Lazy H Horse Trail Net0.6 mi · bike
Native Material · class 2
- North-South0.5 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
- Lookout Mountain Summit0.5 mi · bike
Native Material · class 2
- Golden Age Single Track0.5 mi · bike
Native Material · class 3
- Crosier Mountain Summit0.5 mi · bike
Native Material · class 2
- Hawkins Surguine Spur0.5 mi · bike
Native Material · class 3
- Forsythe Canyon0.5 mi · bike
Native Material · class 3
- North Observatory0.5 mi · bike
Native Material · class 3
- Twin Bridges0.5 mi · bike
Native Material · class 3 · Jun–Nov
- Lazy H Horse Trail Net0.5 mi · bike
Native Material · class 2
- Lost Lake0.5 mi · bike
Native Material · class 3
Grade not recorded (3)
No grade band recorded in the USFS data.
- West Stillwater8.2 mi · bike + e-bike
Native Material · Jun–Nov
- Eye To Eye2.2 mi · bike
Native Material · class 3 · Jul–Nov
- Double Bit0.8 mi · bike + e-bike
Native Material · class 3 · Jun–Nov
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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