Roll out from Parkeerplaats Isarauen bei Goben and straight into the nature reserve, with the Isar river alongside. Past the nature reserve Magerstandorte bei Rosenau, then on through the nature reserve Isaraltwasser- und Brennenbereich bei Mamming. Of the 63.8 km, 87% runs unpaved, with 477 m of climbing along the way. Back to where you started.