Oglala National Grassland Border Loop
Big sky country in Nebraska's northwest corner
Where Nebraska meets Wyoming and Colorado, the Oglala National Grassland spreads across 95,000 acres of mixed-grass prairie that most drivers never see from the interstate. This 28-mile loop starts near Harrison and follows old ranch roads through country where Oligocene fossils weather out of creek banks and pronghorn still outnumber people. The route gets interesting around Agate Fossil Beds, where two-track roads cross seasonal drainages that can trap unwary drivers in heavy clay.
Easy to moderate difficulty depending on weather — those clay bottoms turn to axle-deep gumbo when wet. Any high-clearance vehicle handles dry conditions fine, but 4WD recommended during spring runoff or after storms. Best seasons are late summer through fall when the ground firms up. No permits needed on public grassland. Dispersed camping allowed, though finding level ground with wind protection takes some scouting. Carry extra fuel and water — services are thin out here, but so are the crowds.
Trail Specs
| Difficulty | Easy |
|---|---|
| Trail Type | Overland Route |
| Surface | Mixed |
| Features | Camping, Remote, Scenic |
| Length (miles) | 28 mi / 45.1 km |
| Duration | 1-2 days |
| Max elevation (ft) | 4200 ft |
| Best season | August-October |
| Minimum vehicle | High-clearance 2WD |
| Nearest town | Harrison, Nebraska |
| Land manager | USDA Forest Service |
| Permit required | No |
| Cell service | None |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock pickup truck handle this trail?
Yes, high-clearance 2WD is sufficient for this easy route. Stock trucks, SUVs, and crossovers with decent ground clearance will do fine on the mixed prairie surfaces.
Is the trail accessible in winter and spring?
Best avoided during winter due to snow and spring due to mud. August through October offers the most reliable conditions with dry surfaces and comfortable temperatures.
Do I need permits to drive through Oglala National Grassland?
No permits required for driving the trail. It's public land managed by the Forest Service with free access for day use and dispersed camping.
What's the most challenging part of this easy trail?
Water crossings are the main obstacles, though they're typically shallow. After rain, some prairie sections can become slick and muddy.
Where can I camp along the 28-mile loop?
Dispersed camping is allowed throughout the grassland following Leave No Trace principles. Look for established sites away from water sources and roads.