Roll out from Parkeerplaats Rarangseen and straight into the Rarangseen nature reserve, then on through Kienhorst, Köllnseen and Eichheide. Climb to the Askanierturm viewpoint before the route dips into Schorfheide-Chorin and the Schnelle Havel. It's 62.4 km with 254 m of climbing, and the surface is almost entirely unpaved, so expect a mostly off-road loop that brings you back to where you started.