Idaho trails · Crows Nest
Crows Nest
A 19.5-mile out-and-back in Idaho, with 1,428 ft of climbing. Reaches Twin Oaks Reservoir and other lake/spring/summit destinations. Managed by the Bureau of Land Management.
Elevation profile
Most of the climbing sits in the middle third — 76% of the ascent, between mile 6.5 and mile 13.0.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Twin Oaks Reservoir (lake)
- Middle Water Hole (spring)
- Divide Reservoir (lake)
- Green Spring Reservoir (lake)
- Rocks Reservoir (lake)
- Greybull Reservoir (lake)
- Seep Reservoir (lake)
- Seven Hundred Reservoir (lake)
- Crows Nest (summit)
Getting there
Crows Nest access. 43.23130, -114.61406 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:31 a.m., the sun rises at 7:01 a.m. and sets at 8:15 p.m., and the last usable light fades about 8:44 p.m. (MDT) — 13 h 14 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 39.0-mile round trip works out to roughly 15 h 51 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Loop options
- Crows Nest + Macom Flat + Thorn Creek — 15.6 mi loop, 1,008 ft gain
Nearby trails
- Curtis Lake — 6.1 mi