Olympia Odos is a toll motorway system on the Peloponnese in Greece. Starting from Eleusis in the Athens metropolitan area, the Olympia Odos motorways follow the Gulf of Corinth to the Rio–Antirrio bridge and the city of Patras, and along the Ionian Sea coastline, in future down to Tsakona (near Meligalas) in the southwestern Peloponnese where it will intersect with the A7 motorway.
Olympia Odos consists of two motorways:
The 210 km (130 mi) motorway is a toll-road linking Athens to Patras and, in the future, will extend a further 163 km to Tsakona in the south-west of the Peloponnese.