Idaho trails · Curtis Lake
Curtis Lake
A 19.1-mile out-and-back in Idaho, with 1,422 ft of climbing. Reaches Darrah Reservoir and other lake destinations. Managed by the Bureau of Land Management.
Elevation profile
The climbing leans toward the middle third: 54% of the ascent falls between mile 6.4 and mile 12.8. It gives back about 693 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Darrah Reservoir (lake)
- Floyds Reservoir (lake)
- Paddock Reservoir (lake)
- Summit Reservoir (lake)
- Shoshone Reservoir (lake)
- Spray Reservoir Number Two (lake)
Getting there
Curtis Lake access. About 1 h 07 min drive (34 mi, 6 of them unpaved) from Hailey. 43.26750, -114.50389 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:21 a.m., the sun rises at 7:50 a.m. and sets at 6:56 p.m., and the last usable light fades about 7:25 p.m. (MDT) — 11 h 07 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 38.3-mile round trip works out to roughly 15 h 36 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Nearby trails
- Crows Nest — 6.1 mi