Roll out of Saint-Laurent-de-Terregatte and let the road carry you past the Manoir de Dougeru and the Château des Montgomery, two castles on the way out. Then it's river country: L'Oir, La Sélune and Le Beuvron follow one another as the route loops through 83.5 km of paved road with 773 m of climbing. Castles first, water next, home last.