Roll out from Parkeerplaats Kalkmagerrasen bei Rüthen-Meiste and let the road carry you past the Tuffstein bei Büren nature reserve, then on to Drei Steine, Gericht and Weberstein, all nature reserves in turn. It's 75.1 km with 848 m of climbing, and every metre is paved, so the surface stays verhard the whole way round. Four reserves, one steady loop, and back to where you started.
