De InterRail Global Pass is valid in:
Belgium, Bosnia and Herzegovina, Bulgaria, Denmark, Germany, Finland, France, Great Britain, Greece, Ireland, Italy, Luxembourg, VJR Macedonia, Montenegro, Netherlands, Norway, Austria, Poland, Portugal, Romania, Serbia, Sweden, Switzerland , Slovenia, Slovakia, Spain, Czech Republic, Turkey and Hungary.
Ferries Italy - Greece
The InterRail Global Pass is also valid on the ferries from Ancona and Bari (Italy) to Patras and Igoumenitsa (Greece) and back . Port charges payable at the port.
Not valid in:
The Interrail pass is not valid in Albania, Kosovo, Belarus, Estonia, Latvia, Lithuania, Moldova, Russia and Ukraine. There are no railways in Andorra, Cyprus, Faroe Islands, Gibraltar, Iceland, Malta and San Marino.