Roll out of Flechtingen and let the route unfold: first past Burg Calvörde, then through the Klüdener Pax-Wanneweh nature reserve and along the Ohre river. Castles keep you company — Rittergut Bodendorf, Veltheimsburg, Rittergut Emden — with the Wellenberge-Rüsterberg and Rehm nature reserves in between. The 90.0 km loop ends back in Flechtingen, with just a sliver of unpaved surface under your wheels.