West Sleeper sits at 3,881 feet in the Sandwich Range Wilderness, a forested summit tucked between Mount Tripyramid to the northwest and Mount Passaconaway to the northeast. It is the taller of the two Sleeper peaks, yet a technicality of topographic prominence keeps it off the New England Hundred Highest list: the high ridge connecting it to South Tripyramid does not drop far enough to grant the required 200 feet of prominence. Both peaks are named for Katherine "Kate" Sleeper (1862–1949), the Wonalancet innkeeper who was instrumental in trail development across this corner of the White Mountains, and whose name the Kate Sleeper Trail also bears.
The standard route follows the Downes Brook Trail from a trailhead off the Kancamagus Highway (Route 112), covering roughly 14 miles round trip with about 2,000 feet of elevation gain. The trail tracks Downes Brook for several miles through dense forest with multiple stream crossings before climbing to a junction with the Kate Sleeper Trail. From there, a short spur path branches off to the West Sleeper summit, which is wooded with limited views.
Stream crossings can be tricky in early spring when snowmelt swells Downes Brook, and snow on the Kate Sleeper Trail can linger well into May. The long approach makes this a full-day outing best planned with an early start.