The Prato allo Stelvio side starts at 910 m, in Trentino-Alto Adige, Italy. It's the lowest point on the route, at the foot of the climb toward the Passo dello Stelvio. Over the 24.6 km of the route, elevation loss totals just 96 m: the climb runs almost continuously to the top of the pass.
The route passes Stilfserbrücke - Ponte Stelvio at km 4.4, at 1,135 m, then Trafoi at km 10.4, at 1,521 m. This is the longest climb of the ascent: it runs from km 0 to km 24.6, gaining 1,842 m.
The Passo dello Stelvio tops out at 2,752 m, at the top of the Prato allo Stelvio side. From Prato allo Stelvio, total climbing on this ascent comes to 1,808 m, at an average gradient of 7.4% over the whole route. Elevation loss on this climb comes to 96 m.
Paths and places: © OpenStreetMap contributors. Altitudes measured on the route.