The hike to Hallett Peak 3.877 m above sea level begins from the Bear Lake Trailhead. The peak is named for William L. Hallett (1856–1947), an outstanding mountain climber. Non-technical climbers may reach the summit of Hallett Peak by hiking up the Flattop Mountain Trail to its high point, then walking south along the ridgeline and ascending the peak over talus piles.
