California trails · Camp Irene
A 14.8-mile out-and-back in California, with 4,106 ft of climbing. Reaches Round Top Lake and other lake destinations. Managed by the U.S. Forest Service.
The climbing is spread fairly evenly along the route.

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 6:01 a.m., the sun rises at 6:28 a.m. and sets at 7:31 p.m., and the last usable light fades about 7:59 p.m. (PDT) — 13 h 04 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 29.7-mile round trip works out to roughly 15 h 05 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.