Mark Twain National Forest Forest Road 192 Greer Springs Loop
Missouri's deepest spring via rough Ozark forest roads
Greer Springs pumps 200 million gallons of crystal-clear water daily from Missouri’s deepest known spring, and Forest Road 192 delivers you through the rough country surrounding this natural wonder. The loop starts near Alton and winds through steep-sided hollows where old-growth timber survived the logging era, crossing multiple creek beds and climbing rocky ridges that’ll test your suspension. The road passes abandoned homesteads and CCC-era stone bridges, with the highlight being the short hike down to Greer Springs itself — a massive upwelling that forms the headwaters of the Eleven Point River.
This moderate route demands high-clearance 4WD for the rocky creek crossings and steep climbs, especially after rain when the clay sections turn greasy. Summer brings thick canopy cover but also potential washouts, while fall and winter offer the clearest driving but coldest spring water. No permits needed, but fuel up in Alton — it’s remote country once you’re committed. The payoff is experiencing one of Missouri’s most impressive natural features via a genuine backcountry approach that keeps the crowds away.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Technical 4x4 |
| Surface | Dirt |
| Features | Historic, Remote, Scenic, Water Crossings |
| Length (miles) | 18 mi / 29 km |
| Duration | Half day |
| Max elevation (ft) | 1150 ft |
| Best season | April-November |
| Minimum vehicle | Stock 4WD high-clearance |
| Nearest town | Alton, Missouri |
| Land manager | Mark Twain National Forest |
| Permit required | No |
| Cell service | None |
| 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 Jeep Cherokee XJ handle Forest Road 192?
Yes, a stock XJ with decent tires can handle this trail. The water crossings and rocky sections require careful line choice but nothing extreme for a vehicle with proper ground clearance.
Is Forest Road 192 open during winter months?
The trail stays open year-round but becomes much more challenging with ice and muddy conditions from December through March. Best conditions are April through November when the ground is more stable.
Do I need any permits to drive the Greer Springs Loop?
No permits required for driving Forest Road 192. It's a designated forest road in Mark Twain National Forest, but follow Leave No Trace principles and respect any seasonal closures.
What's the toughest part of the Greer Springs Loop?
The water crossings can be sketchy during high water, and there are several rocky climbs with loose surfaces that require momentum and good tire placement. Nothing impassable for experienced drivers.
Can I camp along Forest Road 192 or do I need to find established campgrounds?
Dispersed camping is allowed throughout the Mark Twain National Forest, so you can camp anywhere along the trail as long as you're 100 feet from water sources. No cell service means offline maps are essential.