Roll out from Parkeerplaats Donaualtwasser Schnödhof and straight into the nature reserve of the same name. Then it's castle after castle — Schloss Bertoldsheim, Burg Wellheim, Burg Nassenfels and Schloss Neuburg — with the Mauerner Höhlen and Trockenhänge bei Dollnstein nature reserves and Kreut along the way. Seventy-eight kilometres, 833 metres of climbing, and 98% of it on paved surface. Back to where you started.
