Passo Rolle is a high mountain pass at an elevation of 1.989m (6,526ft) above the sea level, located in Trentino in Italy. The pass is traversed by the SS50 road.
The asphalted road on the summit connects the Fiemme and Primiero valleys, and the communities of Predazzo, San Martino di Castrozza and Fiera di Primiero. The road over the pass was built between 1863 and 1874. It includes uncountable curves. In sparse pine forest serpentine by serpentine the road winds up. During the Dolomite war, the Passo di Rolle gained negative fame as the main battle line ran along this mountain chain.
There are 2 routes to reach the summit. Starting from Fiera di Primiero, the ascent is 23.1 km long. Over this distance, the elevation gain is 1.253 meters. The average percentage is 5.4 %. And starting from Predazzo, the ascent is 20.5 km long. Over this distance, the elevation gain is 957 meters. The average percentage is 4.7 %.