Double black (extreme) Big Sky, MT
5th Gully drops 609 vertical feet over 904 feet of skiing, with a steepest pitch of 51° about 330 feet below the top. That's steeper than 99% of the 2,251 double black runs we've measured in North America, and the 2nd steepest of 290 named runs at Big Sky. It faces northeast.
Facing northeast at an average 43°, 5th Gully gets about 61% of the winter sun that flat ground at Big Sky does, December through March. That's shadier than 83% of the runs we've measured, and the 41st shadiest named run at Big Sky. Its top sits at 10,320 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.