It is 137 kilometers long and runs from Burgsinn in Main-Spessart district through Roßbach, Dreistelz, Würzburger Haus on the Farnsberg, Kissinger Hütte on the Feuerberg, Kreuzberg (monastery), Oberweißenbrunn, through the Red and Black Moors, over the Ellenbogen and the Emberg via Oberalba, past Baier to Stadtlengsfeld and on to its destination at Bad Salzungen on the Werra River.