Black diamond Winter Park, CO
Retta's Run drops 899 vertical feet over 2,714 feet of skiing, with a steepest pitch of 30° about 610 feet below the top. That's steeper than 54% of the 4,740 black diamond runs we've measured in North America, and the 53rd steepest of 164 named runs at Winter Park. It faces north.
Facing north at an average 20°, Retta's Run gets about 56% of the winter sun that flat ground at Winter Park does, December through March. That's shadier than 88% of the runs we've measured, and the 16th shadiest named run at Winter Park. Its top sits at 10,700 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.