Infinite Spur

The Infinite Spur is a six-pitch route combining rock and ice on a major Alaskan mountain face. Its character includes sustained technical climbing in mixed conditions. That route type makes objective conditions a major part of planning beyond pure movement difficulty.

The first ascent is attributed to George Lowe and Michael Kennedy in 1977. That historical anchor is frequently used when discussing the modern big-wall and alpine climbing chronology. The route is often referenced as an important benchmark in North American mountain alpinism.

It is strongly commitment-based, not just a technical exercise, because of exposure, altitude, and mixed terrain on Mount Foraker. The six-pitch structure does not reduce the objective seriousness. It is commonly included in advanced alpinist training discussions.

The route is on Mount Foraker in Alaska, so weather windows and glacier systems are key context. Climbers usually plan around long commitment factors, glacier conditions, and logistics in that region. The Alaskan setting is a core reason the route is discussed differently from non-alpine hard routes.