One Horse Gap
One Horse Gap Trail is a 8.8 miles trail in Shawnee National Forest, Illinois. The Forest Service rates it trail class 2 to 3, moderately developed to developed. It is open to hiking and horse and pack stock.
Trail conditions, closures and hazards are not tracked here. The Shawnee National Forest official page carries current alerts and closure orders.
Map
One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.
| One end | 37.5447, -88.4875 · Directions ↗ |
| Other end | 37.5333, -88.4532 · Directions ↗ |
The ends are the two ends of the longest connected chain of segments. The record does not say which is the usual start. The trail is recorded as 2 segments.
The trail
| Length | 8.8 miles |
| Trail class | 2, moderately developed; 3, developed |
| Type | land trail |
| Surface | native material |
| Typical grade | 10-12 percent, 8-10 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Closed to all motorized use year-round |
| Accessibility | Not evaluated |
| Trail numbers | 001E10, 106A |
| Forest | Shawnee National Forest (unit 0908) |
| States | Illinois |
| Detail published | management level, with uses |
Values are the set across all segments. Class 1 is minimally developed and class 5 is fully developed. Grade and width are the forest's typical values, not measured extremes.
Allowed uses
| Hiking | Allowed year-round |
| Horse and pack stock | Allowed year-round |
A use is listed when the Forest Service records it as managed, accepted or discouraged on any segment. Discouraged still means legal. Uses marked restricted are left out. Where the forest publishes a Motor Vehicle Use Map, that map governs motorized use.
Trailheads
The Forest Service recreation layer records no trailhead within a third of a mile of this trail's line. Many trails start from a road pullout or another trail with no trailhead record. The forest's recreation pages list the trailheads it does publish.
Distance is from the point to the nearest part of the trail line. Season text is what the forest wrote and is often a season name rather than a date. The recreation page link goes to the Forest Service site, which may redirect to the forest's recreation index.
Camping nearby
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
Campsite Atlas cards carry site counts and booking links from Recreation.gov. Forest Service cards come from the recreation layer and link the agency page.
Fire nearby
- PrescribedPrison C & D Rx
31 mi from the trail midpoint · 168 acres
- PrescribedWater Tower B C D E Rx
31 mi from the trail midpoint · 148 acres
- PrescribedLift Station A & B Rx
33 mi from the trail midpoint · 126 acres
- PrescribedA-13 Piles Rx
34 mi from the trail midpoint · 10 acres
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Reference
Questions people ask
How long is the One Horse Gap Trail?
8.8 miles, the sum of the 2 segments the Forest Service records under this name in Shawnee National Forest.
Source: Forest Service trail layer
What is allowed on the One Horse Gap Trail?
hiking and horse and pack stock. The trail is closed to motor vehicles year-round.
Source: Forest Service trail layer
Where does the One Horse Gap Trail start?
The line begins at 37.5447, -88.4875 and ends at 37.5333, -88.4532. No Forest Service trailhead is recorded within a third of a mile of it. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the One Horse Gap Trail in a wilderness area?
No. The trail line does not cross any polygon in the National Wilderness Preservation System layer.
Source: Wilderness Connect
Where can I camp near the One Horse Gap Trail?
No federal campground is recorded within five miles of the trail. Dispersed camping is allowed on most National Forest land outside posted closures. The forest office has the current rules.
How developed is the One Horse Gap Trail?
Trail class 2 to 3, which the Forest Service describes as moderately developed to developed. Class 1 is a minimal, unimproved route and class 5 is fully developed, often paved.
Source: Forest Service trail layer
How steep and how wide is the One Horse Gap Trail?
The typical grade is 10-12 percent on most segments and 8-10 percent on others. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the One Horse Gap Trail?
Shawnee National Forest, Forest Service unit 0908. The trail is in Illinois.
Is there a fire near the One Horse Gap Trail?
4 active incidents within 50 miles of the trail midpoint as of 2026-09-17, the nearest Prison C & D Rx at 31 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 2 segments named ONE HORSE GAP in the Forest Service TrailNFS_Publish layer, administrative unit 0908. Wilderness overlap is tested against the National Wilderness Preservation System layer from Wilderness Connect. Trailheads and Forest Service campgrounds come from the Forest Service Recreation Opportunities layer. Data refreshed September 17, 2026. The methodology page explains how segments become trails.