Roll out from Parkeerplaats Erlensee and let the mix of paved and unpaved keep you guessing. First the Bulau forest, then along the Nidder river, before the Im alten See bei Gronau nature reserve opens things up. Past the former Burg Wachenbuchen castle you spin on to the Bruchköbel nature reserve, with 437 m of climbing spread across the day. Then it's back to where you started.