Idaho trails · Boulder Chain Lakes
A 4.0-mile network in Idaho, with 1,421 ft of climbing. Reaches Windy Devil and other lake/pass destinations. Managed by the U.S. Forest Service.
The climbing is spread fairly evenly along the route. It climbs almost continuously, with little descent to recover on.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:22 a.m., the sun rises at 7:51 a.m. and sets at 6:56 p.m., and the last usable light fades about 7:25 p.m. (MDT) — 11 h 05 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 4.0-mile route takes roughly 2 h 12 min, so leaving the trailhead at sunrise puts you back around 10:03 a.m. — 8 h 52 min before sunset.