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 (southbound)
• Akrotiriou Street
• South by-pass near the Glafkos river
• Demokratias Street
• Access to Ilias Street and GR-9 along with the Patras Bypass at the Ovrya interchange (exit 4 southbound/2 northbound)
• Ovrya
• near Kallithéa, Achaia
• junction with road to Chalandritsa and Kalavryta
• junction with two roads to Fares and the Patras Industrial Area
• Diasello
• Agia Iliada
• forest
• Panopoulo
• junction with a second branch
• Lampeia
• Tripotama
• Panagitsa
• junction with 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.