Black diamond Sun Valley, ID
International Ridge drops 543 vertical feet over 1,906 feet of skiing, with a steepest pitch of 31° about 1,800 feet below the top. That's steeper than 63% of the 4,740 black diamond runs we've measured in North America, and the 23rd steepest of 99 named runs at Sun Valley. It faces northeast.
Facing northeast at an average 17°, International Ridge gets about 69% of the winter sun that flat ground at Sun Valley does, December through March. That's shadier than 72% of the runs we've measured, and the 62nd shadiest named run at Sun Valley. Its top sits at 8,530 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.