Double black Gore Mountain, NY
Upper Darby drops 213 vertical feet over 931 feet of skiing, with a steepest pitch of 30° about 140 feet below the top. That's steeper than 25% of the 2,251 double black runs we've measured in North America, and the 11th steepest of 107 named runs at Gore Mountain. It faces east.
Facing east at an average 14°, Upper Darby gets about 98% of the winter sun that flat ground at Gore Mountain does, December through March. That's sunnier than 70% of the runs we've measured, and the 57th sunniest named run at Gore Mountain. Its top sits at 3,450 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.