South Dakota trails · Grace Coolidge Walk-In Fishing Area
A 2.8-mile out-and-back in South Dakota, with 386 ft of climbing. Reaches Center Lake. Managed by the state.
The climbing leans toward the final third: 53% of the ascent falls between mile 1.9 and mile 2.8. It climbs almost continuously, with little descent to recover on.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Grace Coolidge Walk-In Fishing Area access. 43.77869, -103.40298 · directions
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 5:46 a.m., the sun rises at 6:15 a.m. and sets at 7:31 p.m., and the last usable light fades about 8:01 p.m. (MDT) — 13 h 16 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 5.7-mile round trip takes roughly 2 h 29 min, so leaving the trailhead at sunrise puts you back around 8:45 a.m. — 10 h 46 min before sunset.