Montana OHV trails & MVUM routes
Montana has 15,199.5 miles of motorized national-forest routes on the U.S. Forest Service Motor Vehicle Use Map, spread across 29 ranger districts in 7 national forests — 12,548.1 miles of roads and 2,651.4 miles of trails. ATV routes are designated across 25 of them. Filter by vehicle type to find where you can legally ride an ATV, dirt bike, side-by-side, 4x4 or e-bike, then open a district for miles, seasons, a route map and GPX. Informational only — always follow the official MVUM.
- Total motorized miles
- 15,199.5
- National forests
- 7
- Ranger districts
- 29
- ATV districts
- 25
12,548.1 mi of roads · 2,651.4 mi of trails across 29 ranger districts.
National forests in Montana
| Lolo National Forest | 5 | 3,675.7 | 3,310.9 | 364.8 |
|---|---|---|---|---|
| Kootenai National Forest | 5 | 3,592.3 | 3,479.1 | 113.2 |
| Helena-Lewis and Clark National Forest | 6 | 2,905.9 | 2,018.9 | 887 |
| Bitterroot National Forest | 4 | 2,265.7 | 1,757.2 | 508.5 |
| Flathead National Forest | 5 | 1,631 | 1,421.9 | 209.1 |
| Custer National Forest | 3 | 1,122.8 | 554 | 568.8 |
| Custer Gallatin National Forest | 1 | 6.1 | 6.1 | 0 |
Ranger districts by vehicle & miles
Every ranger district in Montana, ranked by motorized miles. Choose a vehicle to show only districts that designate it, or type to filter. Each district page has the full access matrix, seasons, a map and GPX.
| Libby Ranger District | Kootenai National Forest | 1,411.9 | 0.2 | 22 |
|---|---|---|---|---|
| Superior Ranger District | Lolo National Forest | 1,071.6 | 6.4 | 161.6 |
| Plains/Thompson Falls Ranger District | Lolo National Forest | 1,028.3 | 7.4 | 142.1 |
| Judith-Musselshell Ranger District | Helena-Lewis and Clark National Forest | 832.7 | 359.8 | 468.8 |
| West Fork Ranger District | Bitterroot National Forest | 753.4 | 359.1 | 408.5 |
| Fortine Ranger District | Kootenai National Forest | 709.4 | — | — |
| Darby Ranger District | Bitterroot National Forest | 649.6 | 79.4 | 147.1 |
| Ninemile Ranger District | Lolo National Forest | 644.6 | 3.2 | 11 |
| Belt Creek-White Sulphur Springs Ranger District | Helena-Lewis and Clark National Forest | 623.2 | 240.5 | 370.2 |
| Sula Ranger District | Bitterroot National Forest | 596.7 | 225.4 | 255.2 |
| Missoula Ranger District | Lolo National Forest | 588.2 | 6.3 | 44.6 |
| Ashland Ranger District | Custer National Forest | 571.3 | 447.5 | 447.5 |
| Tally Lake Ranger District | Flathead National Forest | 562 | 0.5 | 69 |
| Townsend Ranger District | Helena-Lewis and Clark National Forest | 526.3 | 168.5 | 184 |
| Three Rivers Ranger District | Kootenai National Forest | 507 | — | — |
| Rexford Ranger District | Kootenai National Forest | 483.2 | — | — |
| Cabinet Ranger District | Kootenai National Forest | 480.8 | 21 | 63.1 |
| Swan Lake Ranger District | Flathead National Forest | 455.6 | 32.1 | 67 |
| Helena Ranger District | Helena-Lewis and Clark National Forest | 447.6 | 116.6 | 116.6 |
| Seeley Lake Ranger District | Lolo National Forest | 343 | 1.1 | 5.5 |
| Lincoln Ranger District | Helena-Lewis and Clark National Forest | 304.5 | 27.9 | 27.9 |
| Sioux Ranger District | Custer National Forest | 296.5 | 144.4 | 144.4 |
| Hungry Horse Ranger District | Flathead National Forest | 278.7 | 14.4 | 53.3 |
| Stevensville Ranger District | Bitterroot National Forest | 266 | 38.5 | 44.2 |
| Beartooth Ranger District | Custer National Forest | 255 | 102.3 | 108.5 |
| Glacier View Ranger District | Flathead National Forest | 228.5 | 12.9 | 15 |
| Rocky Mountain Ranger District | Helena-Lewis and Clark National Forest | 171.6 | 21.7 | 71.6 |
| Spotted Bear Ranger District | Flathead National Forest | 106.2 | 0.2 | 11.2 |
| Beartooth Ranger District | Custer Gallatin National Forest | 6.1 | 0 | 0 |
Data: U.S. Forest Service, Enterprise Data Warehouse (EDW) Motor Vehicle Use Map — Roads (layer 1) and Trails (layer 2), retrieved 2026-07-11. A work of the U.S. Government, public domain (17 U.S.C. §105). State assignment: U.S. Census Bureau TIGERweb state boundaries.
Frequently asked questions
- Where can you ride an ATV on national-forest land in Montana?
- Montana has ATV-designated MVUM routes across 25 ranger districts (about 2,437.3 designated miles). Use the vehicle filter above to see them, then open a district for its routes, seasons and GPX.
- How many miles of national-forest OHV routes are in Montana?
- 15,199.5 miles of motorized routes on the Forest Service MVUM — 12,548.1 miles of roads and 2,651.4 miles of trails — across 29 ranger districts.
- Are these Motor Vehicle Use Maps legal documents?
- No. Every figure here is an informational summary of the MVUM route data. The legal document is each district's official Motor Vehicle Use Map, which you must carry and follow.
Explore
New to Motor Vehicle Use Maps? Read what an MVUM is or the methodology. Every figure here is informational, from the U.S. Forest Service MVUM — always carry and follow the official map when you ride.