This 93.8 km loop rolls out of Eichgraben and follows the Große Tulln river before a run of castles: Schloss Aumühle, Schloss Atzenbrugg, Schloss Judenau and Schloss Laudon. Then the ride turns into the green, threading the Kernzone Deutschwald of the Biosphärenpark Wienerwald and the Naturpark Purkersdorf. Just 4% of the route is unpaved, so most of it runs on pavement. The castles and reserves come in that order, and then it's back to Eichgraben.
