Blue Purgatory, CO
Cathedral Treeway drops 678 vertical feet over 3,122 feet of skiing, with a steepest pitch of 22° about 560 feet below the top. That's steeper than 53% of the 5,615 blue runs we've measured in North America, and the 70th steepest of 90 named runs at Purgatory. It faces northwest.
Facing northwest at an average 13°, Cathedral Treeway gets about 74% of the winter sun that flat ground at Purgatory does, December through March. That's shadier than 65% of the runs we've measured, and the 34th shadiest named run at Purgatory. Its top sits at 10,500 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.