Green Buttermilk, CO
Tom's Thumb drops 167 vertical feet over 1,596 feet of skiing, with a steepest pitch of 15° about 800 feet below the top. That's steeper than 58% of the 3,109 green runs we've measured in North America, and the 35th steepest of 41 named runs at Buttermilk. It faces northeast.
Facing northeast at an average 6°, Tom's Thumb gets about 91% of the winter sun that flat ground at Buttermilk does, December through March. That's sunnier than 61% of the runs we've measured, and the 4th sunniest named run at Buttermilk. Its top sits at 9,860 feet.
With little slope to hide behind, it takes nearly the full winter sun of open ground: powder settles and turns heavy sooner after a storm, and spring snow softens early. 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 USGS lidar (1-meter where it exists, coarser elsewhere). 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.