Black River State Forest Smrekar Road Loop
Sand and savanna in Wisconsin's backcountry
The Smrekar Road Loop cuts through some of Black River State Forest’s most challenging terrain, where deep sand pockets hide between rolling hills of native prairie and oak savanna. This 12-mile backcountry circuit starts near the Castle Mound Recreation Area and winds through scattered wetlands and abandoned logging roads, with the notorious Sand Creek crossing testing ground clearance and approach angles during spring runoff.
Moderate difficulty with stock 4WD handling most sections, though aired-down tires help in the deeper sand. Late summer through fall offers the best conditions when water levels drop and sand firms up slightly. No permits required, but dispersed camping is allowed throughout the forest. The payoff is solitude in one of Wisconsin’s largest state forests, with excellent wildlife viewing and access to some of the state’s best prairie restoration areas.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Dirt, Sand |
| Features | Camping, Remote, Scenic, Water Crossings |
| Length (miles) | 12 mi / 19.3 km |
| Duration | Half day |
| Max elevation (ft) | 1180 ft |
| Best season | August-October |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Black River Falls, WI |
| Land manager | Wisconsin Department of Natural Resources |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | Yes |
| 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 Cherokee handle the deep sand sections?
Yes, but air down to 15-18 PSI and keep momentum through the sand pockets. The deep sand is the main challenge here, not rocks or steep grades.
Is this trail passable in spring or early summer?
Avoid May through July when the sand is softer from snowmelt and spring rains. August through October offers the best conditions with firmer sand.
Do I need permits or pay fees to run this loop?
No permits or fees required. This is public land managed by Wisconsin DNR with open access for dispersed camping and recreation.
What's the hardest part of this trail?
The deep sand sections combined with creek crossings create the biggest challenge. You'll need to maintain speed through sand while being ready to slow for water.
Can I get cell service if I need help out there?
Cell service is spotty throughout the loop. Download offline maps and tell someone your plans before heading out into this remote area.