Railway connections play a somewhat lesser role in Greece than in many other European countries, but they too have also been expanded, with new suburban/commuter rail connections, serviced by Proastiakos around Athens, towards its airport, Kiato and Chalkida; around Thessaloniki, towards the cities of Larissa and Edessa; and around Patras. A modern intercity rail connection between Athens and Thessaloniki has also been established, while an upgrade to double lines in many parts of the 2,500 km (<answer>1,600 mi</answer>) network is underway. International railway lines connect Greek cities with the rest of Europe, the Balkans and Turkey.
How long is the Greek railway system?
1,600 mi