California trails · Green Mountain
Green Mountain
A 19.9-mile out-and-back in California, with 1,948 ft of climbing. Reaches Rattlesnake Lake and other lake/spring/summit destinations. Managed by the U.S. Forest Service.
Elevation profile
The climbing leans toward the first third: 47% of the ascent falls between mile 0.0 and mile 6.6. It gives back about 4,847 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Rattlesnake Lake (lake)
- Last Chance Spring (spring)
- Whites Creek Lake (lake)
- Green Mountain (summit)
Heads up
Getting there
Green Mountain access. 40.87702, -123.31279 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:10 a.m., the sun rises at 6:38 a.m. and sets at 7:47 p.m., and the last usable light fades about 8:15 p.m. (PDT) — 13 h 09 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 39.9-mile round trip works out to roughly 16 h 43 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Loop options
- Green Mountain OHV Route + Green Mountain — 2.5 mi loop, 591 ft gain
Nearby trails
- Salmon Summit — 15.8 mi