Odontotos Rack Railway

Hellenic Train (OSE)

Greece

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

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

Rack-and-pinion Abt system combined with standard train brakes for steep 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
Mega Spilaion Monastery access road engineering at cliff terminus

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

Rack system

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

Average speed

~22 km/h