Koralm Railway

The Koralm Railway is a railway line connecting Graz and Klagenfurt through mountainous terrain in Austria. The route incorporates a series of long tunnels to overcome the elevation changes between the two cities.

The project began in 2001 to create an important connection between two regions. Since initial openings in the 2000s, the line has been progressively expanded and modernized.

The railway network connects the regional capitals of Styria and Carinthia, integrating communities and strengthening transportation links between Austrian provinces.

The line operates in several sections and passes through mountain regions with varying weather conditions. Travelers should expect varied journey times as new track sections come into service.

A main feature is an especially long tunnel running beneath a mountain mass, ranking among the world's longest railway tunnels. This tunnel was one of the greatest engineering challenges of the entire project.

Location: Styria

Location: Carinthia

Website: https://infrastruktur.oebb.at/de/projekte-fuer-oesterreich/bahnstrecken/suedstrecke-wien-villach/koralmbahn

GPS coordinates: 46.75930,15.01430

Latest update: December 7, 2025 09:21