Black diamond Lost Trail, MT
Big Spruce Trail drops 132 vertical feet over 593 feet of skiing, with a steepest pitch of 25° about 510 feet below the top. That's steeper than 23% of the 4,740 black diamond runs we've measured in North America, and the 36th steepest of 67 named runs at Lost Trail. It faces east.
Facing east at an average 13°, Big Spruce Trail gets about 111% of the winter sun that flat ground at Lost Trail does, December through March. That's sunnier than 81% of the runs we've measured, and the 15th sunniest named run at Lost Trail. Its top sits at 7,670 feet.
Angled toward the low winter sun, it bakes: powder turns heavy soon after a storm, and in spring it softens early in the day and refreezes hard overnight. 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.