Wyoming trails · Boulder Canyon
A 9.2-mile out-and-back in Wyoming, with 2,399 ft of climbing. Reaches North Fork Falls and other lake/waterfall destinations. Managed by USFS 040307.
The climbing is spread fairly evenly along the route.
BOULDER LAKE TRAILHEAD — parking nearby. 42.85550, -109.61897 · directions
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:12 a.m., the sun rises at 6:41 a.m. and sets at 7:55 p.m., and the last usable light fades about 8:24 p.m. (MDT) — 13 h 13 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 18.4-mile round trip takes roughly 9 h 12 min, so leaving the trailhead at sunrise puts you back around 3:54 p.m. — 4 h 01 min before sunset.