Black diamond Cypress Mountain, BC
Upper Rainbow drops 175 vertical feet over 497 feet of skiing. It faces southwest.
Facing southwest at an average 21°, Upper Rainbow gets about 145% of the winter sun that flat ground at Cypress Mountain does, December through March. That's sunnier than 97% of the runs we've measured, and the 15th sunniest named run at Cypress Mountain. Its top sits at 3,790 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 Natural Resources Canada 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.