Driving Roads / Stelvio Pass

Climbing to 9,045 feet via 48 stacked hairpins on its northeast side, Stelvio is one of the highest and most dramatic paved passes in the Alps. It runs about 31 miles along SS38 (Passo dello Stelvio) in Italy. Drive time: about 1 h 20 min one way.
Best time to go: Late May or June to October; the pass is closed seasonally between November and May.

Sources: Length · High point · Best time. Drive time is the route time for the mapped route without stops, from Mapbox.
Record the stacked switchbacks and the whole pass lands on your map. Count the hairpins, not the speed.
Blind hairpins shared with cyclists, motorcycles and buses demand slow, predictable cornering and staying fully in your lane.
Open Road keeps every drive: the route on a map, the time and the distance. On iPhone and Android.