Illinois trails · River To River Trail
River To River Trail
A 8.6-mile out-and-back in Illinois, with 231 ft of climbing.
Elevation profile
The climbing leans toward the first third: 50% of the ascent falls between mile 0.0 and mile 2.9. It gives back about 352 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Heads up
Getting there
ONE HORSE GAP access. About 44 min drive (20 mi) from Harrisburg. 37.54466, -88.48746 · 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 17 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 17.2-mile round trip takes roughly 6 h 37 min, so leaving the trailhead at sunrise puts you back around 1:37 p.m. — 4 h 40 min before sunset.
Loop options
- River to River Trail + River To River Trail (New 2025?) + LITTLE CACHE — 3.0 mi loop, 423 ft gain
- River to River Trail + LITTLE CACHE — 2.0 mi loop, 262 ft gain
- LITTLE CACHE + River To River Trail (New 2025?) + River to River Trail — 3.4 mi loop, 435 ft gain
Nearby trails
- One Horse Gap — 2.5 mi
- One Horse Gap Lake — 3.1 mi
- New Gog - Karbers Ridge — 3.3 mi
- Lusk Creek — 3.7 mi