Roll out from Parkeerplaats Karthäuser Mühlenbach and straight into the Karthäuser Mühlenbach nature reserve. Next up are Weißes Venn und Geisheide and Weisses Venn-Geisheide, two more nature reserves, before the Erlenbruch „Sandheck“ nature reserve. The 64.0 km loop mixes 73% paved with 27% unpaved, and 315 m of climbing keeps things interesting. Back at the start before you know it.