This circular walk in West Sussex is a full day’s excursion. It is mostly a level walk but its length makes it fairly strenuous, although the beauty of the landscape will lighten your feet. There are fine views all the way, to the South Downs on the way out and to Black Down and the Greensand hills on the way back. The walk can be divided into two shorter walks of 10 (or 8) and 9 miles. There was some mud when this walk was researched, but that was after weeks of heavy winter rain. Because of the length, comfortable boots are recommended. There are no nettles and the walk should be fine for an athletic dog too.