The A8 motorway, also known as the Olympia Odos (), is a toll motorway in southwestern Greece, which connects Athens with Pyrgos and Patras via Corinth, spanning a total of .
The motorway replaces Greek National Road 8A, which has been upgraded to modern motorway standards. The completion date was scheduled for 2014. Since April 2017, the entire motorway from Eleusis to Patras is fully operational.Olympia Odos, the motorway from Eleusis to Patras, in operation, on ypodomes.gr The extension to Pyrgos opened in 2025. The future extension to Tsakona near Kalamata is in the planning stages.
Operation
Olympia Odos S.A. will maintain and operate the road for a total of 30 years. Operations will include two Traffic Control Centers built to operate 24/7 to handle emergency calls, as well as monitor traffic situations and contact emergency services when needed. Also, as part of the construction deal, 24/7 patrols, worksite protection, timely detection and response to incidents, and special services in the winter, are included.
During the construction phase, routine maintenance and work for all parts of the infrastructure of the existing National roads were conducted.
Facilities , there are 5 front, two-sided toll stations on the A8: at Eleusis, the Isthmus, Zevgolateio, Elaionashttps://www.olympiaodos.gr/en/Diodia-OLYMPIA-PASS/Times-diodion/ and Rio. The section between Eleusis and Corinth has 3 lanes per direction. There are service areas in Nea Peramos, Megara, Isthmus, Kiato, Akrata and Aigio.Motorways-Exits
Construction progress On September 2, 2016, the first fully completed Olympia Odos segment, the section between Ancient Corinth and Kiato (20 km with 2 lanes in each direction + emergency lane and two interchanges in Zevgolatio and Kiato), was officially opened to traffic, with the presence of the Greek Prime Minister, Alexis Tsipras. Although there were still some minor scale works (mostly on interchanges), traffic flow was not impacted. On the same day, the Derveni tunnels were given to public use. On December 19, 2016, another 9 km opened in Olympia Odos from Kiato to Xylokastro, without the Xylokastro interchange which was opened in February together with Derveni Interchange.
Any remaining segments of the motorway under construction were completed and opened to traffic in April 2017 when the official inauguration of the road took place as well, at the same month that segments of the A5 motorway and the A1 motorway's Tempe tunnels were also inaugurated and opened to traffic.
In July 2025, the Patras to Pyrgos segment of the motorway was opened. Planning is under way for the extension to Ancient Olympia and south to Tsakona near Kalamata where the motorway will intersect with the A7 motorway.
Tunnels Westbound (direction Patras) Geraneia Tunnel () Efpalinos Tunnel () Aithra Tunnel () Panagopoula Tunnel ()
Eastbound (direction Athens) Panagopoula Tunnel () Derveni Tunnel () Skyron Tunnel () Thiseas Tunnel ()
Exit list
Notes Under construction Planned Regional unitExitNameDestinationsNotes/Also asWest Attica 1 Eleusis EO3 Eastern terminus of the motorway 2 Attiki Odos interchange A6 E94 to Athens International Airport (to Eleusis only) 2A Nea Peramos toll post free to Patras only 3 Nea Peramos 4 Megara 5 Pachi 6 Panorama 7 Kineta Corinthia 8 Agioi Theodoroi 9 Loutraki EO8 10 Epidaurus EO10 11 Corinth center EO8 12 Moreas interchange A7 E65 to Tripoli, Kalamata 13 Ancient Corinth EO7 14 Zevgolateio 15 Kiato 16 Xylokastro 17 Lykoporia 18 Derveni Achaea 19 Akrata 20 Kalavryta 21 Aigio east EO8 22 Aigio west EO8 23 Selianitika EO8 24 Drepano 25 Rio interchange A5 E55 E65 to Ioannina Western terminus of the motorway
References
External links Olympia Odos official website