Lonesome Highway — Seminoe Reservoir to Alcova via the Miracle Mile Road
Red canyon, blue river, zero cell signal.
The North Platte River carves a tight, red-walled canyon between Seminoe Reservoir and Pathfinder Reservoir in south-central Wyoming, and the dirt road that follows it is among the most overlooked routes in the state. Drop south off Highway 220 west of Alcova, cross the reservation land buffer on Carbon County Road 351, and work your way toward the Seminoe Dam face. The middle section — locals call it the Miracle Mile — runs beside one of the most famous tailwater trout fisheries in the Rockies, a canyon stretch where pronghorn crowd the riverside flats and golden eagles work the thermals off the canyon walls. The road deteriorates after river crossings wash out the gravel in spring.
This is a straightforward high-clearance route in dry conditions — a stock 4WD truck with decent tires covers it comfortably. The problem is weather: afternoon thunderstorms in July and August turn the clay sections slicker than ice, and the road becomes genuinely impassable. Best window is late June or September through October. Fuel in Rawlins before heading south; Alcova has nothing. Water from the river needs treatment. BLM land flanks most of the route, and dispersed camping is wide open. Plan for wind. This is Wyoming — it’s always wind.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | High Clearance, Overland Route |
| Surface | Dirt, Gravel |
| Features | Camping, Historic, Remote, Scenic |
| Length (miles) | 42 mi / 67.6 km |
| Duration | 1-2 days |
| Max elevation (ft) | 6600 ft |
| Best season | June-October |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Rawlins, WY |
| Land manager | BLM Rawlins Field Office |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Official sources | blm.gov |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a stock Tacoma or 4Runner run this trail, or do I need a lifted rig?
A stock high-clearance 4WD like a Tacoma or 4Runner handles this fine. The road is dirt and gravel with some rougher washboarded sections, but nothing requires a lift — just don't bring a stock Wrangler Sport on street tires and expect a smooth time.
When is the Seminoe to Alcova road actually driveable? Does it close in winter?
Best window is June through October. Spring mud and late-season snow can make the dirt sections genuinely impassable, and there's no maintenance crew rushing out to save you. Don't push the shoulder seasons without checking current conditions with the BLM Rawlins Field Office first.
Do I need a permit or pay any fees to drive this route?
No permit required for the overland route itself. Seminoe State Park at the south end charges a Wyoming state park day-use or camping fee if you're using park facilities. BLM dispersed camping along the middle stretch is free with no permit needed.
What's the hardest section and what should I actually be ready for?
The roughest stretch runs through the red-rock canyon country between the reservoir and the Miracle Mile — expect loose rock, erosion cuts, and washboard that'll rattle your gear loose if it's not strapped down. Nothing technically extreme, but the remoteness is the real hazard: it's 42 miles with no cell signal and limited turnaround options if something breaks.
Is there reliable water along the route, or do I need to carry everything?
The North Platte River runs through the Miracle Mile section and is a legitimate water source if you're filtering or treating, but don't count on anything else along the route. Carry enough for your full run — there are no towns, no spigots, and no bailout points once you're deep in.
Trail track
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