ReckonTrails Open the map

South Dakota trails · French Creek and Mt. Coolidge Trail

French Creek and Mt. Coolidge Trail

A 9.4-mile out-and-back in South Dakota, with 868 ft of climbing. Reaches The Narrows.

Open in the interactive map →

Length
9.4 mi
Elevation gain
868 ft
Difficulty
Hard
Max grade
14%
Steepest mile
+194 ft
Tread at ≥10% grade
0.1 mi
Shape
out-and-back
Surface
Dirt
Bikes
yes

Elevation profile

3,719 – 4,584 ft123456789

The climbing is spread fairly evenly along the route. It climbs almost continuously, with little descent to recover on.

3-D terrain

3-D terrain view of French Creek and Mt. Coolidge Trail

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5

Reaches

Getting there

French Creek and Mt. Coolidge Trail access. About 52 min drive (34 mi) from Rapid City. 43.71214, -103.35132 · directions

Daylight at the trailhead

On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:37 a.m., the sun rises at 7:06 a.m. and sets at 6:11 p.m., and the last usable light fades about 6:40 p.m. (MDT) — 11 h 06 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 18.9-mile round trip takes roughly 7 h 52 min, so leaving the trailhead at sunrise puts you back around 2:57 p.m. — 3 h 14 min before sunset.

Nearby trails