Regia Trazzera Prestanfuso, one of the steepest roads in Italy
Located in the Metropolitan City of Palermo, Sicily, in Italy, the Regia Trazzera Prestanfuso is said to be one of the steepest roads of the country.
The road is 1.4 km (0.86 miles) long and runs north-south from Scillato to the Strada Provinciale 24. The road is paved with concrete.
The road is extremely steep, with sections up to 27%, which will force you to use 1st gear most of the time going uphill, or you will run down. If you go downhill you need to have your foot on the brake constantly. This road gets very slippery after rains. It's closed to trucks and heavy vehicles.
Starting from Scillato (at 192m above the sea level), the road is 1.4 km (0.86 miles) long. Over this distance the elevation gain is 208 meters. The average gradient is 14.85%.