Roll out from Parkeerplaats Vogelfreistätte Kauerlacher Weiher and let the route unfold: 62.0 km with 548 m of climbing, mostly unpaved. You pass the Vogelfreistätte Kauerlacher Weiher nature reserve, then follow the Schwarzach river into the Naturpark Altmühltal nature reserve. From there the Sulz river leads you along, before the loop brings you back to where you started.