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 August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:30 a.m., the sun rises at 7:00 a.m. and sets at 8:16 p.m., and the last usable light fades about 8:46 p.m. (MDT) — 13 h 16 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 9:12 a.m. — 11 h 04 min before sunset.