Green Crested Butte, CO
Lower Keystone drops 503 vertical feet over 2,894 feet of skiing, with a steepest pitch of 18° about 720 feet below the top. That's steeper than 76% of the 3,109 green runs we've measured in North America, and the 208th steepest of 227 named runs at Crested Butte. It faces west.
Facing west at an average 10°, Lower Keystone gets about 93% of the winter sun that flat ground at Crested Butte does, December through March. That's sunnier than 63% of the runs we've measured, and the 28th sunniest named run at Crested Butte. Its top sits at 10,210 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.