Black diamond Crystal Mountain, WA
I-5 drops 1,121 vertical feet over 8,351 feet of skiing, with a steepest pitch of 35° about 3,580 feet below the top. That's steeper than 85% of the 4,740 black diamond runs we've measured in North America, and the 66th steepest of 133 named runs at Crystal Mountain. It faces east.
Facing east at an average 8°, I-5 gets about 88% of the winter sun that flat ground at Crystal Mountain does, December through March. That's sunnier than 58% of the runs we've measured, and the 78th sunniest named run at Crystal Mountain. Its top sits at 5,540 feet.
It gets an ordinary dose of sun: powder lasts a typical amount of time, and spring snow softens on a normal schedule. 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.