Odontotos Rack Railway

Hellenic Train (OSE)
Greece
Loading Map...
The Journey

Navigate from Diakofto Station to Kalavryta Station across a span of 22km.

Scenery Highlights
  • Vouraikos Gorge
  • Vouraikos River rapids
  • 60 hand-carved stone tunnels
  • Mega Spilaion Monastery cliff-faces (4th-century cliff-hanging monastery)
  • Kalavryta mountain town terminus (~950 m elevation)
Quick Facts
  • Duration

    1 hours

  • Distance

    22 km

  • Est. Price

    Ultra-affordable (€10 standard one-way pre-suspension)

Official Booking Provider

Classes & Accommodations

Meals: None

Ensuite: No


Engine / Locomotive

Historic diesel or steam locomotives (rack-and-pinion equipped)

Locomotive Weight

Varies by locomotive class

Track Gauge

750 mm (2 ft 5.5 in) ultra-narrow gauge — among the narrowest public railways on earth

Braking Technology

Abt rack-and-pinion system combined with standard train brakes for steep gradients; the rack provides positive traction and braking on 10% gradients

Route Engineering Challenges
  • 10% (1 in 10) maximum gradient — one of the steepest rack railway grades in the world

  • 60 hand-carved stone tunnels through Vouraikos Gorge cliff faces

  • Numerous tight curves following the river gorge alignment

  • Frequent flash flooding and landslide risk in the gorge — particularly after the 2023 wildfires and 2024–2026 storm cycles

  • Mega Spilaion Monastery access road engineering at cliff terminus

  • Ongoing 2026 landslides and rockfalls from Mount Chelmos triggering indefinite service suspension

Route operator

Hellenic Train / OSE

Route distance

22 km (Diakofto–Kalavryta)

Maximum elevation

~950 m (Kalavryta)

Notable structures

60 hand-carved stone tunnels, 2 metal bridges, Vouraikos Gorge corridor, Mega Spilaion Monastery access

Rack system

Abt rack-and-pinion (3-rail system)

Average speed

~22 km/h

Service status

Suspended indefinitely since 12 March 2026 — Tech Chamber (TEE) study and slope monitoring in progress

Inaugurated

1896

Quick Facts
  • Duration

    1 hours

  • Distance

    22 km

  • Est. Price

    Ultra-affordable (€10 standard one-way pre-suspension)

Official Booking Provider