In a 2012/13 EC report, Priority Project 22: Railway axis Athens–Sofia–Budapest–Vienna–Prague–Nuremberg/Dresden (PP22), Priority Project 22: Railway axis Athens–Sofia–Budapest–Vienna–Prague–Nuremberg/Dresden, Annual Report of the Coordinator, Gilles Savary, European Commission, Brussels, October 2013 the planners included their considerations of the Balkan route, which follows Pan-European Corridor X (Corridor X) through Austria, Slovenia, Croatia, Serbia, North Macedonia and Greece (Thessaloniki–Skopje–Belgrade–Budapest/Zagreb–Ljubljana–Graz/Salzburg) and shortens the present Athens–Budapest route via Bulgaria and Romania by 330 kilometers .