Idaho trails · Mount Harrington
Mount Harrington
A 10.2-mile out-and-back in Idaho, with 2,037 ft of climbing. Reaches Harrington Saddle and other lake/pass/summit destinations. Managed by the U.S. Forest Service.
Elevation profile
The climbing leans toward the first third: 53% of the ascent falls between mile 0.0 and mile 3.4. It gives back about 1,863 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Harrington Saddle (pass)
- Harrington Mountain (summit)
- Buck Creek Saddle (pass)
- Swet Lake Pond (lake)
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 6:24 a.m., the sun rises at 6:54 a.m. and sets at 5:56 p.m., and the last usable light fades about 6:26 p.m. (PDT) — 11 h 02 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 20.3-mile round trip takes roughly 9 h 33 min, so leaving the trailhead at sunrise puts you back around 4:27 p.m. — 1 h 28 min before sunset.
Nearby trails
- Cottonwood Butte — 14.7 mi
- Square Top-West Horse — 21.3 mi
- Archer Trail — 24.0 mi
- Disgrace Butte Trail — 27.1 mi