Double black Aspen Mountain, CO
1A Lift Line drops 305 vertical feet over 558 feet of skiing, with a steepest pitch of 39° about 50 feet below the top. That's steeper than 63% of the 2,251 double black runs we've measured in North America, and the 17th steepest of 139 named runs at Aspen Mountain. It faces north.
Facing north at an average 33°, 1A Lift Line gets about 31% of the winter sun that flat ground at Aspen Mountain does, December through March. That's shadier than 99% of the runs we've measured, and the shadiest named run at Aspen Mountain. Its top sits at 8,870 feet.
Shaded snow stays colder and drier, so it holds powder longer after a storm and is slower to crust over or turn to slush in spring. Shading from ridges and trees isn't counted yet.
under 25°25–35°35–45°45°+ Hover to follow the line on the map.
Measured by ZRankings from 1-meter USGS lidar. Steepest pitch is the steepest stretch of about 50 vertical feet along the skiable line. Run lines come from OpenStreetMap and can sit a little off the skied path.