Blue Purgatory, CO
Upper Demon drops 487 vertical feet over 2,631 feet of skiing, with a steepest pitch of 28° about 410 feet below the top. That's steeper than 93% of the 5,615 blue runs we've measured in North America, and the 41st steepest of 90 named runs at Purgatory. It faces east.
Facing east at an average 11°, Upper Demon gets about 96% of the winter sun that flat ground at Purgatory does, December through March. That's sunnier than 67% of the runs we've measured, and the 11th sunniest named run at Purgatory. Its top sits at 9,820 feet.
With little slope to hide behind, it takes nearly the full winter sun of open ground: powder settles and turns heavy sooner after a storm, and spring snow softens early. 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.