Will you be walking from Auxerre to Vezelay? A nice route to follow is
Auxerre, Cravant, Mailly-le-Chateau, Chatel-Censoir to Vezelay. In late autumn 2008 I walked from our farm located on the Marne over the hills to Vezelay. I intended to continue on to SJPdP and Spain but unfortunately my knees did not!