Johnson-Sauk Trail Historic Military Road
Black Hawk War military route through prairie history
This historic military road traces the original route blazed by General Winfield Scott’s troops during the 1832 Black Hawk War, cutting through Henry and Rock Island counties from the Rock River to the Mississippi. The trail winds through remnant tallgrass prairie and oak savanna, past old settler cemeteries and forgotten military camps. Key waypoints include the Hennepin Canal crossing and the original Colona settlement ruins, where soldiers once resupplied during their pursuit of Chief Black Hawk’s band.
Easy to moderate difficulty makes this accessible to any high-clearance vehicle, though spring rains can turn prairie sections muddy. Best traveled April through October when gates are open and prairie wildflowers peak. No permits required on this mix of county roads and private easements – respect posted boundaries. Dispersed camping available at Hennepin Canal Parkway sites. This is Illinois history you can drive, connecting you to the prairie wars that shaped the upper Midwest.
Trail Specs
| Difficulty | Easy |
|---|---|
| Trail Type | Scenic Drive |
| Surface | Dirt |
| Features | Camping, Historic, Scenic |
| Length (miles) | 28 mi / 45.1 km |
| Duration | Half day |
| Max elevation (ft) | 780 ft |
| Best season | April-October |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Geneseo, Illinois |
| Land manager | Henry County Forest Preserve |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | Yes |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can a stock SUV or truck handle this trail without modifications?
Yes — the minimum is a stock 4WD high-clearance vehicle, and most unmodified trucks and SUVs will do fine. It's a dirt scenic drive rated easy, so nothing exotic is required.
When is the trail accessible and are there any seasonal closures?
Best window is April through October. Illinois dirt roads can turn to serious mud after heavy spring rains, so check conditions after precipitation before you roll out.
Are there permits or fees to drive or camp here?
The trail runs through Henry County Forest Preserve land — check directly with the Henry County Forest Preserve District for any current camping fees or permit requirements, as these can change seasonally.
What's the hardest part of this trail and what should I actually expect?
Nothing on this 28-mile route is technically demanding — the challenge is more about surface conditions after rain than any specific obstacle. Expect rutted dirt, open prairie, and oak savanna, not rock crawling.
Are there water crossings, and how many are there along the route?
Yes, there are water crossings on this trail. Depths vary with rainfall and season — after significant precip, what's normally a non-issue can slow you down, so scout before committing if water looks high.
Trail track
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