Black diamond Aspen Mountain, CO
Lower Roch Run drops 371 vertical feet over 1,023 feet of skiing, with a steepest pitch of 38° about 630 feet below the top. That's steeper than 93% of the 4,740 black diamond runs we've measured in North America, and the 21st steepest of 139 named runs at Aspen Mountain. It faces northwest.
Facing northwest at an average 21°, Lower Roch Run gets about 55% of the winter sun that flat ground at Aspen Mountain does, December through March. That's shadier than 90% of the runs we've measured, and the 18th shadiest named run at Aspen Mountain. Its top sits at 9,390 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.