Seminoe-Alcova Back Country Byway
Official backcountry byway through granite mountains
The Bureau of Land Management designated this 54-mile route as Wyoming’s first official Back Country Byway, connecting Seminoe and Alcova reservoirs through the rugged Haystack Mountains. The trail follows old mining roads past abandoned uranium prospects and through granite outcrops that challenge even experienced drivers. Bradley Peak offers panoramic views of the Granite Mountains, while the route passes through areas where the Oregon Trail pioneers struggled across the North Platte River crossing at Red Buttes.
This is a technical 4WD route requiring good ground clearance and rock sliders for the rougher sections. Sharp granite can shred sidewalls, so carry tire repair kit and full-size spare. The byway is accessible most of the year except during spring mud season and heavy snow. Dispersed camping is excellent throughout, with fishing available at both reservoirs. Bring plenty of water—natural sources are scarce in this high desert country. The route rewards those who complete it with genuine solitude and Wyoming’s trademark big sky country.
Trail Specs
| Difficulty | Difficult |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Rock |
| Features | Camping, Historic, Remote, Scenic |
| Length (miles) | 54 mi / 86.9 km |
| Duration | 1-2 days |
| Max elevation (ft) | 7500 ft |
| Best season | May-October |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Rawlins, Wyoming |
| Land manager | Bureau of Land Management |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| 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 Jeep Wrangler make it through this trail?
Yes, but you'll scrape. The granite rock sections demand good articulation and careful line choices. High clearance 4WD is the bare minimum - lockers help but aren't required.
Is the Seminoe-Alcova Byway open in early April?
No, snow typically blocks sections until May. October is your cutoff before winter closures. BLM recommends May through October for good reason.
Do I need permits for the Seminoe-Alcova Back Country Byway?
No permits required. It's a designated BLM byway, free to run. Just follow Leave No Trace principles for dispersed camping.
What's the gnarliest section I should know about?
The granite slabs in the Haystack Mountains will test your breakover angle. Expect body contact if you're not careful with line selection through the technical rock gardens.
Can I find cell service anywhere on this 54-mile route?
Zero cell service once you leave pavement. Bring a satellite communicator if you need emergency contact. You're truly remote between the two reservoirs.