Idaho trails · Black Lake - Horse Heaven
A 8.7-mile out-and-back in Idaho, with 1,849 ft of climbing. Reaches Horse Heaven and other lake/pass/summit destinations. Managed by the U.S. Forest Service.
The climbing is spread fairly evenly along the route. It gives back about 2,292 ft along the way, so it rolls rather than climbing steadily.
Black Lake - Horse Heaven access — parking nearby. 45.19056, -116.56010 · directions
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:36 a.m., the sun rises at 7:06 a.m. and sets at 8:25 p.m., and the last usable light fades about 8:56 p.m. (MDT) — 13 h 19 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 17.4-mile round trip takes roughly 8 h 18 min, so leaving the trailhead at sunrise puts you back around 3:25 p.m. — 5 h 01 min before sunset.