Roll out from Parkeerplaats Klamm und Kastlhäng and straight into the Klamm und Kastlhäng nature reserve. Then it's castle after castle: Schloss Aicholding, the Ruine Rabenstein and Schloss Rosenburg, before the Weiße Laber river leads you into Naturpark Altmühltal. Schloss Maierhofen and Schloss Prunn keep the theme going on the way back. It's 75.9 km, all paved and 900 m of climbing.