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Wyoming trails · Big Sandy

Big Sandy

A 7.4-mile out-and-back in Wyoming, with 1,684 ft of climbing. Reaches Jackass Pass and other lake/pass destinations. Managed by USFS 040307.

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Length
7.4 mi
Elevation gain
1,684 ft
Difficulty
Expert
Max grade
38%
Steepest mile
+681 ft
Tread at ≥10% grade
1.9 mi
Shape
out-and-back
Surface
NATIVE MATERIAL
Bikes
yes
Horses
yes
Managed by
USFS 040307

Elevation profile

9,103 – 10,787 ft1234567

Most of the climbing sits in the final third — 67% of the ascent, between mile 4.9 and mile 7.4.

3-D terrain

3-D terrain view of Big Sandy

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5

Reaches

Heads up

Stream ford: expect at least one unbridged crossing.
Terrain graded T2 (SAC scale).

Daylight at the trailhead

On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:00 a.m., the sun rises at 7:28 a.m. and sets at 6:36 p.m., and the last usable light fades about 7:04 p.m. (MDT) — 11 h 08 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 14.8-mile round trip takes roughly 7 h 09 min, so leaving the trailhead at sunrise puts you back around 2:37 p.m. — 3 h 59 min before sunset.

Nearby trails