Pan-European Transport Corridor № 8 is one of ten Pan-European transport corridors, connecting the Adriatic Sea and the Black Sea through Albania, Macedonia and Bulgaria.Together with corridors № 4, № 7 and № 9 it is one of the four passing throughout the territory of Bulgaria.

The major sections of the Pan-European Transport Corridor № 8 are: Bari / Brindisi - Otranto / Otrantski Strait - Durres / Vlora - Tirana - Elbasan - Kyafasan - Struga - Kitchevo - Gostivar - Tetovo - Skopje - Kumanovo - Curve Palanka - Deve Bair - Kyustendil - Sofia - Plovdiv - Burgas / Varna.

The corridor is intermodal and includes ports, roads, railways, airports, multimodal and intermodal transport infrastructures - auxiliary equipment required to control traffic on the route.

The total length of the Pan-European Transport Corridor № 8 is between 1220 and 1350 km, depending on the specifics of its road and rail routes. 631 km roads pass through Bulgaria and  ready-to-use railways are 747 km. 52% of road infrastructure and more than 55% of the rail infrastructure of the corridor are on Bulgarian territory. All of them have been built and are in operation. The only undeveloped Bulgarian section along the corridor is from railway station Gueshevo to the Bulgarian-Macedonian border with a length of about 2.5 km.