Greek National Road 2, abbreviated as the EO2, is a national road in northern Greece. It is as of April 2026 the longest national road in Greece, running for 583.1 kilometres between the border with Albania border near Krystallopigi and the border with Turkey border near Kipoi, via Thessaloniki. The section of EO2 between Krystallopigi and Gefyra carries European route E86, while the section east of Thessaloniki has been superseded by the newer A2 motorway.