This is the established standard climbing route on Borah Peak and the one most commonly described in climbing references. It is a non-technical alpine ascent, but it is still a serious mountain route because of steep terrain, loose rock, and exposure near the summit ridge. The route typically follows the southwest side of the mountain and then gains the upper ridge to the summit. Conditions can vary significantly with snow, ice, and lingering alpine snowfields, which can increase difficulty and objective hazard. Route-finding is important, especially in poor visibility. The descent is usually made by the same line, and loose rock makes downclimbing and scree travel tedious.
Route Outline
Trailhead or base camp in the Lost River Range -> approach to the southwest side of Borah Peak
Ascend the standard southwest slopes and gullies toward the broad saddle below the summit ridge
Follow the upper ridge/rocky crest to the summit of Borah Peak
Descend the same route back to the trailhead or camp
