Montana trails · Sky Rim Trail
A 10.3-mile out-and-back in Montana, with 1,907 ft of climbing. Reaches Sheep Mountain and other lake/pass/summit destinations. Managed by the National Park Service.
The climbing is spread fairly evenly along the route. It gives back about 3,009 ft along the way, so it rolls rather than climbing steadily.
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:14 a.m., the sun rises at 6:44 a.m. and sets at 8:03 p.m., and the last usable light fades about 8:34 p.m. (MDT) — 13 h 19 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 20.5-mile round trip takes roughly 9 h 31 min, so leaving the trailhead at sunrise puts you back around 4:15 p.m. — 3 h 48 min before sunset.