E3 E3 is 6.950 km and passes through Spain, France, Belgium, Luxembourg, Germany, Czech Republic, Poland, Slovakia, Hungary, Romania and Bulgaria. E3 in Spain E3 in Germany E3 in Poland E3 in Czech Republic E3 in Hungary E3 on Waymarked Trails E3 on Wikipedia E3 on Traildino E3 books and maps Posts about E3 E-paths