It is named after the town of Røros, which was earlier due to copper deposits of great economic importance. This railway line is one of the few in Norway, which is not electrified. The section of line from Trondheim to Støren is also a section of the Dovrebanen.
The Rørosbahn was built in the period 1862-1877 in several sections.
Starting from Hamar, the construction of the first section to Elverum was adopted on September 3, 1857 along with Kongsvingerbanen and Trondhjem - Størenbanen as Norway's first national railways by the Storting.
The total distance was officially opened on 13 October 1877. This makes it the oldest " trunk line " of Norway, that is, a railway line that connects two parts of the country together.
Originally, it was a narrow gauge railway with a track width of 1,067 mm, before it was rebuilt in 1917-1941 to standard gauge.
On January 4, 2000, two trains collided on this route Åsta. 19 people died in this accident.
The route runs through the Østerdalen and reaches Harborg ( between Glåmos and Rugldalen ) with 670 meters over havet ( Moh ) ( official name for the height above sea level in Norway) the highest point. The track has an average slope of 15 parts per thousand ( Løten - Elverum ), the highest value is achieved with 36 per thousand in km 386.296 in Os.