The climb to Mount Blue Sky starts in Idaho Springs, Colorado, at 2,296 m of elevation. This is the Idaho Springs side, the road that leads all the way to the summit. From this starting point, the climb runs without a break, with no intermediate stage, all the way up.
From Idaho Springs (km 0, 2,296 m), the road climbs steadily all the way up to Mount Blue Sky, reached at km 45.1, 4,313 m of elevation. This stretch, from the start to the top, is the longest climb of the ascent: 2,016 m of elevation gain in a single continuous section. No intermediate stage breaks the effort before the summit.
Mount Blue Sky tops out at 4,313 m. Over the full route, the climb gains 2,010 m of elevation across 45.1 km, at an average grade of 4.6%. The descent along the way is marginal, just 48 m, confirming a continuous climb to the summit.
Paths and places: © OpenStreetMap contributors. Altitudes measured on the route.