Illinois trails · One Horse Gap
One Horse Gap
A 8.8-mile network in Illinois, with 308 ft of climbing. Reaches One Horse Gap. Managed by the U.S. Forest Service.
Elevation profile
The climbing is spread fairly evenly along the route. It gives back about 569 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- One Horse Gap (pass)
Heads up
Getting there
BENHAM HILL — parking nearby. About 54 min drive (23 mi) from Harrisburg. 37.50958, -88.47381 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:34 a.m., the sun rises at 7:00 a.m. and sets at 6:18 p.m., and the last usable light fades about 6:44 p.m. (CDT) — 11 h 18 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 8.8-mile route takes roughly 3 h 25 min, so leaving the trailhead at sunrise puts you back around 10:25 a.m. — 7 h 53 min before sunset.
Loop options
- UPPER GAP + ONE HORSE GAP + LOWER GAP — 1.5 mi loop, 295 ft gain
- 177B + ROCKY TOP + ONE HORSE GAP — 1.9 mi loop, 252 ft gain
- HART CREEK + ONE HORSE GAP + HARTS HOLLOW — 1.7 mi loop, 192 ft gain
Nearby trails
- One Horse Gap Lake — 1.7 mi
- River To River Trail — 2.5 mi
- New Gog - Karbers Ridge — 4.8 mi
- Lusk Creek — 5.7 mi