The passes, which provide access to 250,000 kilometres (160,000 mi) of European railway, are used by over 33,000 travellers annually.
The Interrail Pass is available to citizens and residents of European Union countries and the non-EU countries of Albania, Andorra, Belarus, Bosnia-Herzegovina, North Macedonia, Gibraltar, Iceland, Kosovo, Liechtenstein, Moldova, Monaco, Montenegro, Norway, Russian Federation, San Marino, Serbia, Switzerland, Turkey, Ukraine, United Kingdom (Great Britain), and Vatican City.
[8] Surcharges are often required to guarantee seat reservations, meals, drinks, and free Wi-Fi.
Examples include: Many overnight trains (EuroNight, European Sleeper, Nightjet) require reservations, with varying additional costs dependent on preferred sleeping accommodation (including couchettes or sleeping cabins).
Although Eurail and Interrail Passes are usually valid only on the national railway system of the participating countries; many countries also have private railway systems; some offer free (or discounted) tickets to Eurail or Interrail Pass holders.