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Koralmbahn Graz–Klagenfurt

The Koralmbahn is a new double-track line between Graz and Klagenfurt. The route entered scheduled passenger service on 14 December 2025. It includes the 32.894 km Koralmtunnel and sections that entered service earlier.

Total length
125 km
Open today
125 km
Sections
1
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Sections

Sections of Koralmbahn Graz–Klagenfurt: status, length, dates, cost, funding and contractors
SectionsStatusLengthTimelineCostFundingContractorsContract terms
Graz–Klagenfurt new line

The Austrian Court of Audit reports a route length of about 125 km and an ÖBB end-2023 forecast of €6.139 billion. ÖBB publishes 130 km for the Koralmbahn corridor; the cited length follows the audit report. The OSM geometry contains the two parallel tracks tagged with ÖBB ref 401 01, so its drawn length is about twice the single route length.

Opened125 km
  1. 1998Construction start
  2. Dec 14, 2025Opened
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Related projects

Sources

  1. ÖBB-Infrastruktur: Koralmbahn sectionsread Oct 10, 2026
  2. Austrian Court of Audit: Koralmbahn project reportread Oct 10, 2026
  3. Wikipedia: Koralmbahnread Oct 10, 2026
  4. OpenStreetMap: Koralmbahn rail geometry, ÖBB ref 401 01read Oct 10, 2026