OHV Trail Finder

Douglas Ranger District/Thunder Basin National Grassland

Medicine Bow-Routt National Forest · Wyoming · 1,290.5 mi of motorized routes · 1,017 routes · USFS EDW MVUM, retrieved 2026-07-11

The Douglas Ranger District/Thunder Basin National Grassland in Medicine Bow-Routt National Forest (Wyoming) has 1,290.5 miles of motorized routes on the U.S. Forest Service Motor Vehicle Use Map — 1,155.4 miles of roads and 135.1 miles of trails across 1,017 designated routes. Vehicle access: ATV 1,201.9 mi · Motorcycle 1,242.7 mi · E-bike routes. Seasonal routes generally open Jan 1 and close Nov 30. Every route here is informational and derived from the MVUM data — it is not a legal document; carry and follow the district's official Motor Vehicle Use Map. Download the routes as GPX for your GPS or riding app.

Every designated motorized route in the Douglas Ranger District/Thunder Basin National Grassland, drawn from the MVUM geometry (simplified, not to scale, north up). The static map is an instant preview — open the interactive map to explore the routes on a USGS topographic or satellite basemap. Download the routes as GPX below.
Motorized routes Medicine Bow-Routt National Forest · Wyoming
Total motorized miles
1,290.5

1,155.4 mi of roads · 135.1 mi of trails, across 1,017 designated routes on the Motor Vehicle Use Map.

Roads
1,155.4 mi
Trails
135.1 mi
Year-round miles
1,215.2 mi
Seasonal miles
75.2 mi

Vehicle access

What the MVUM designates for each vehicle class in this district — open miles, route count and season. A blank designation means the class is not designated here; it is shown as such, never guessed. ATV, motorcycle and e-bike classes are highlighted.

Per-vehicle-class access in the Douglas Ranger District/Thunder Basin National Grassland, from the Forest Service MVUM.
Vehicle class Open miles Routes Season
Core off-highway (OHV)
ATV 1,201.9 947 Varies by route
Motorcycle / dirt bike 1,242.7 1,009 Varies by route
Other wheeled OHV 1,201.9 947 Varies by route
Wider OHV (over 50 inches)
4WD > 50" 1,126.5 859 Varies by route
2WD > 50" 1,126.5 859 Varies by route
Tracked OHV > 50" 1,126.5 859 Varies by route
Other OHV > 50" 1,126.5 859 Varies by route
Narrow OHV (under 50 inches)
Tracked OHV < 50" 1,201.9 947 Varies by route
Other OHV < 50" 1,201.9 947 Varies by route
E-bikes
E-bike Class 1 0 92 Varies by route
E-bike Class 2 0 92 Varies by route
E-bike Class 3 0 92 Varies by route
Road-legal / licensed vehicles
Passenger vehicle 1,174.2 867 Varies by route
High-clearance vehicle 1,174.2 867 Varies by route
Truck 1,174.2 867 Varies by route
Bus 1,174.2 867 Varies by route
Motorhome 1,174.2 867 Varies by route

Seasons

Of the 1,290.5 motorized miles here, about 1,215.2 miles are open year-round and 75.2 miles are seasonal — the seasonal window generally runs from 01/01 to 11/30 (MM/DD). Each vehicle class can carry its own season; see the access matrix above, and always confirm current status on the official Motor Vehicle Use Map.

Download the routes (GPX)

Load these into your GPS unit or riding app (onX, Gaia, Avenza and most handhelds read GPX).

Download all routes (GPX) ATV-legal routes only (GPX)

Named routes

Show the 654 named routes in this district

Named routes on the MVUM and whether ATV and motorcycle use is designated on each. This is a per-district reference, not a separate page per route. Use the filter to find a route. Showing the first 400; the GPX download above carries all 654.

Named routes in the Douglas Ranger District/Thunder Basin National Grassland with ATV / motorcycle designations.
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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.

Important — informational, not a legal document

This page is a searchable summary of the Forest Service Motor Vehicle Use Map data — it is not the official MVUM and not a legal document. Route designations, closures and conditions change. The controlling document is the district's official Motor Vehicle Use Map: carry it and follow posted signs when you ride.

Official Motor Vehicle Use Map for Medicine Bow-Routt National Forest →

Data vintage: USFS EDW MVUM, retrieved 2026-07-11.

Nearby districts

The six nearest ranger districts by centroid distance (great-circle) — cross-forest and cross-state neighbours included — for planning a wider trip.

Nearby ranger districts, with total motorized miles and distance.
District Forest Total miles Distance
Hell Canyon Ranger District Black Hills National Forest, SD 1,242.5 102 km
Bearlodge Ranger District Black Hills National Forest, WY 338.7 115 km
Mystic Ranger District Black Hills National Forest, SD 1,217.2 123 km
Northern Hills Ranger District Black Hills National Forest, SD 973.8 133 km
Fall River Ranger District Nebraska National Forest, SD 93.7 154 km
Pine Ridge Ranger District Nebraska National Forest, NE 170.5 161 km

Frequently asked questions

Can you ride an ATV in the Douglas Ranger District/Thunder Basin National Grassland?
Yes. The MVUM designates ATV use on about 1,201.9 miles across 947 routes here (varies by route). Confirm on the district's official Motor Vehicle Use Map before you ride.
How many miles of motorized routes are in the Douglas Ranger District/Thunder Basin National Grassland?
1,290.5 miles total — 1,155.4 miles of roads and 135.1 miles of trails, across 1,017 designated routes on the Forest Service MVUM.
Is this the official Motor Vehicle Use Map?
No. This page is an informational, searchable view of the MVUM route data. It is not a legal document. The controlling document is the district's official MVUM — always carry and follow it.
Are the routes open year-round?
Partly. About 1,215.2 miles are open year-round and 75.2 miles are seasonal (typically open Jan 1 to Nov 30). Each vehicle class can have its own season — see the access matrix above.

More in Wyoming

See every ranger district in Medicine Bow-Routt National Forest, browse all Wyoming national-forest routes, or read the methodology behind these figures. New to MVUMs? Start with what a Motor Vehicle Use Map is.