High-speed route
Koralmbahn
Graz → Klagenfurt · Austria
- Distance
- 127 km
- Fastest time
- 41 min
- Average speed
- 186 km/h
- Top speed
- 250 km/h
- Operator
- ÖBB
- Train
- ÖBB Railjet
- Countries
- Austria
- In service since
- 2025
Figures are published values, not live data · corrections log
Austria’s game-changer of December 2025: the 33 km Koralm Tunnel cuts Graz–Klagenfurt from nearly three hours to 45 minutes, forging a new Baltic–Adriatic high-speed axis.
How this line was checked
- Line drawn from OpenStreetMap relation 3551170 — the same nodes OpenStreetMap holds for this railway, thinned to within under 25 m of them
- Checked against OpenStreetMap: the whole line lies on real track, a median 4 m from it
- Checked against the running timetable via Transitous: our line sits under 100 m from the shape of IC 756
- Wikipedia has an article for this line
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