Overview
Cloud Peak is the defining objective of Bighorn National Forest, the highest point in the Bighorn Mountains at 13,175 feet. The standard route from the West Tensleep Lake trailhead passes through a series of high alpine lakes before reaching the Cloud Peak Glacier, one of the few remaining glaciers in Wyoming, and climbing to the rocky summit with views extending across much of the northern Rockies.
This is not a casual day hike. The technical summit requires mountaineering skills and gear. The approach through the Cloud Peak Wilderness is spectacular in its own right, and many parties do 2-day or 3-day backpacks that visit the high lake basins without committing to the summit itself.
The Route
Miles 0.0 to 5.0: Trailhead to First Lake Basin
The trail climbs from the West Tensleep Lake trailhead through open forest and enters the Cloud Peak Wilderness. Multiple alpine lakes appear along this section, each sitting in a glacially carved basin.
Miles 5.0 to 9.0: High Lake Basins
The route gains elevation through progressively higher lake basins above treeline. The terrain is granite and alpine tundra. Views of Cloud Peak and the surrounding wilderness expand at each step.
Miles 9.0 to 11.0: Glacier and Summit
The Cloud Peak Glacier is typically encountered above mile 10. An ice axe and crampons are required here. The summit scramble above the glacier involves exposed Class 3 rock. The summit at 13,175 feet commands extraordinary views.
Miles 11.0 to 22.0: Return
The descent covers the same route. Descending the glacier section requires the same technical skills as the ascent.
When to Hike
Late July through August for optimal conditions. The glacier is at its minimum extent and most stable in August.
Early July snow may still cover the approach trails and glacier conditions are more demanding.
September first winter storms can arrive suddenly. A weather window is essential.
What to Bring
Ice axe and crampons are required for the glacier section. Many hikers carry 3 liters of water; the route has abundant lake water for filtering. Warm layers, rain gear, and a tent appropriate for alpine conditions are essential. A lightweight climbing helmet for the summit scramble.
Trailhead Access
West Tensleep Lake trailhead is on FR-27 off US-16. No fee to hike (as of 2026). Very limited facilities. High-clearance vehicle useful for the forest road.
Nearby
Mistymoon Lake Trail provides the most scenic non-technical lake basin hike in the wilderness from a different trailhead. Hunter Corrals Trail offers a shorter alpine lake approach from the eastern side of the range.
Check current glacier conditions and weather with the Buffalo Ranger District at checking conditions before you go before attempting the summit. Practice Leave No Trace principles throughout the wilderness.