Roll out of Husum and let the ride unfold: first the Nordfriesisches Wattenmeer nature reserve, then along the Ostenau river, then the Arlau river, and back to Husum. The 55.1 km loop mixes 61% paved with 39% unpaved, and only 142 m of climbing keeps things gentle. A quiet circuit from one village, past water and wetlands, home again.