Montana trails · Gunsight Pass
A 18.5-mile out-and-back in Montana, with 3,829 ft of climbing. Reaches Gunsight Pass and other lake/pass/waterfall destinations. Managed by the National Park Service.
The climbing leans toward the first third: 54% of the ascent falls between mile 0.0 and mile 8.2. It gives back about 3,640 ft along the way, so it rolls rather than climbing steadily.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Sperry Trailhead — parking nearby, restroom. 48.61678, -113.87556 · directions
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:18 a.m., the sun rises at 6:50 a.m. and sets at 8:19 p.m., and the last usable light fades about 8:52 p.m. (MDT) — 13 h 29 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 36.9-mile round trip works out to roughly 17 h 30 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.