Trollstigen is a winding mountain road and pass in the municipality of Rauma, Møre og Romsdahl county, Norway.
It is part of the Norwegian county road 63, which connects the town of Ondalsnes in Rauma and the village of Waldal in the municipality of Nordal . It is a popular tourist attraction because of the steep slope of 10% and eleven steep turns on a steep mountain slope. In the height of the tourist season, about 2500 cars pass daily. During the 2012 season 161,421 cars passed the route, compared to 155,230 cars in 2009.
The road is narrow, with many steep turns, and although several turns were extended between 2005 and 2012, vehicles longer than 12.4 meters (41 feet) are prohibited from driving on the road. During the 2011 and 2012 seasons, buses up to 13.1 meters (43 feet) in length were temporarily allowed as a trial. On a plateau 700 meters (2300 feet) high there is a parking lot and several balconies overlooking the curves and waterfall Stigfossen. Stigfossen falls from the mountain at 320 meters (1050 feet). The pass is at an altitude of about 850 meters (2790 feet).
Trollstigen is closed in late fall and winter. The normal season lasts from mid-May to October, but can sometimes be shorter or longer due to weather conditions.
Trollstigen was opened on July 31, 1936 by King Håkon VII after eight years of construction.
In 2012, the construction of a large tourist facility, including a restaurant, was completed. Several viewing platforms were built and the old buildings were improved. Trollstigen (along with County Road 63) was officially opened as a national tourist route by the Minister of Transport and Communications on 16 June 2012 Trollstigen itself (and the alpine peaks to the west) lies within the Trollstigen landscape protection area, while the alpine area east of Trollstigen, including the Trollstenden Ridge, is part of the Rheinheimen National Park .
In the summer of 2005, the road was repaired and about 16 million kroons was spent on protection against rockfalls, which increased the safety of traffic on the road.