Black diamond Crested Butte, CO
Keystone drops 400 vertical feet over 1,010 feet of skiing, with a steepest pitch of 25° about 220 feet below the top. That's steeper than 26% of the 4,740 black diamond runs we've measured in North America, and the 162nd steepest of 227 named runs at Crested Butte. It faces north.
Facing north at an average 23°, Keystone gets about 51% of the winter sun that flat ground at Crested Butte does, December through March. That's shadier than 92% of the runs we've measured, and the 9th shadiest named run at Crested Butte. Its top sits at 11,020 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.