California trails · 20 Lakes Basin Loop
20 Lakes Basin Loop
A 4.2-mile network in California, with 273 ft of climbing. Reaches Lundy Pass and other lake/pass destinations. Managed by the U.S. Forest Service.
Elevation profile
The climbing leans toward the first third: 46% of the ascent falls between mile 0.0 and mile 1.4. It gives back about 491 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Lundy Pass (pass)
- Lake Helen (lake)
- Hummingbird Lake (lake)
- Odell Lake (lake)
- Steelhead Lake (lake)
- Wasco Lake (lake)
- Twin Lakes (lake)
- Shamrock Lake (lake)
- Greenstone Lake (lake)
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 5:58 a.m., the sun rises at 6:25 a.m. and sets at 7:28 p.m., and the last usable light fades about 7:55 p.m. (PDT) — 13 h 02 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 4.2-mile route takes roughly 1 h 41 min, so leaving the trailhead at sunrise puts you back around 8:06 a.m. — 11 h 21 min before sunset.
Loop options
- 20 Lakes Basin Loop + Saddlebag Lake Loop — 8.7 mi loop, 868 ft gain
Nearby trails
- Green Creek Trail — 4.8 mi
- Green Creek — 9.0 mi
- Robinson Creek Trail — 12.5 mi
- Robinson Creek — 12.7 mi