Montana trails · Cleft Rock
Cleft Rock
A 10.7-mile out-and-back in Montana, with 3,166 ft of climbing. Reaches Seemo Pass and other arch/pass/summit destinations. Managed by the U.S. Forest Service.
Elevation profile
The climbing leans toward the first third: 52% of the ascent falls between mile 0.0 and mile 3.6. It gives back about 2,608 ft along the way, so it rolls rather than climbing steadily.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Reaches
- Seemo Pass (pass)
- Cleft Rock Mountain (summit)
- Cleft Rock (arch)
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:25 a.m., the sun rises at 7:57 a.m. and sets at 6:51 p.m., and the last usable light fades about 7:22 p.m. (MDT) — 10 h 54 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 21.4-mile round trip works out to roughly 11 h 06 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Nearby trails
- Boulder Pass — 13.8 mi