From Steinbek out past the Oberer Herrenteich nature reserve, on through Kneeden forest and by Tralauer Schloss castle. Then the Naturpark Holsteinische Schweiz opens up before the loop turns for home. Of the 72.6 km, roughly half runs unpaved, with 433 m of climbing along the way. Back to Steinbek, past the Ihlsee und Ihlwald nature reserve on the return.