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Montana trails · West Fork Rock Creek

West Fork Rock Creek

A 10.6-mile out-and-back in Montana, with 3,160 ft of climbing. Reaches Sentinel Falls and other lake/pass/waterfall destinations. Managed by the U.S. Forest Service.

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Length
10.6 mi
Elevation gain
3,160 ft
Difficulty
Expert
Max grade
32%
Steepest mile
+549 ft
Tread at ≥10% grade
2.5 mi
Shape
out-and-back
Bikes
no
Horses
yes
Managed by
U.S. Forest Service

Elevation profile

7,882 – 11,042 ft12345678910

The climbing leans toward the final third: 48% of the ascent falls between mile 7.1 and mile 10.6. It climbs almost continuously, with little descent to recover on.

3-D terrain

3-D terrain view of West Fork Rock Creek

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

Reaches

Heads up

Stream ford: expect at least one unbridged crossing.

Getting there

WEST FORK — parking nearby, restroom, water. About 2 h 56 min drive (136 mi) from Livingston. 45.16852, -109.49553 · directions

Daylight at the trailhead

On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:02 a.m., the sun rises at 7:32 a.m. and sets at 6:34 p.m., and the last usable light fades about 7:04 p.m. (MDT) — 11 h 03 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 21.3-mile round trip takes roughly 11 h 02 min, so leaving the trailhead at sunrise puts you back around 6:34 p.m. — 0 min before sunset.

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