The Corridor IX is one of the Pan-European corridors. It runs between Helsinki in Finland and Alexandroupolis in Greece. The corridor follows the route: Helsinki - Vyborg - Saint Petersburg - Moscow - Kyiv - Chișinău - Bucharest - Ruse - Stara Zagora - Dimitrovgrad - Alexandroupolis.
Branches Corridor IX has 3 branches: Branch A - Klaipėda - Vilnius - Minsk - Gomel Branch B - Kaliningrad - Vilnius - Minsk - Gomel Branch C - Liubashivka - Rozdilna - Odesa
References https://ec.europa.eu/ten/transport/external_dimension/hlg/2005_03_31_tent_consultation/doc/corridor_status_report_2000_2001_en.pdf