Greece Interstate 33 is a highway that runs from Patras, originally at Dimitris Gounaris Street, now begins at the beltway, and had a branch ending at Olympia, and ends near Vytina, and Levídi, and some think it still ends at Ellinikon near Andritsaina and Megalopolis. Its length is about: 130 km, 170 km with the second branch, and 200 km with both, and 175 km from Patras to S of Ellinikon.

The highway follows into towns and villages like:

On some maps: Rhion (obsolete) - GR-8A - Patras.

Patras (obsolete) - Demokratias Street - Ovrya - near Kallithé, Achaia - Diasello - Aghia Triada - Panopoulo - Lampeia - Panagitsa - GR-74. Tertiary: Dimitsaina - Stremnitsa - Elliniko - GR-76. rarely operable

Second Branch: near Panopoulo - Olympia, now rarely operable. Also the only road linking Krestena and Pyrgos and Kalavrita.

See also: List of Greek roads.