Double black (extreme) Crested Butte, CO
Flatiron drops 1,030 vertical feet over 1,894 feet of skiing, with a steepest pitch of 38° about 160 feet below the top. That's steeper than 59% of the 2,251 double black runs we've measured in North America, and the 92nd steepest of 227 named runs at Crested Butte. It faces northwest.
Facing northwest at an average 33°, Flatiron gets about 70% of the winter sun that flat ground at Crested Butte does, December through March. That's shadier than 71% of the runs we've measured, and the 37th shadiest named run at Crested Butte. Its top sits at 11,520 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.