This long circuit crosses rolling landscapes dotted with ponds and where many streams flow. To the east it reaches the Couesnon valley with its meanderings and mills. It takes 3 kilometres along the bike route from Saint-Pern to Antrain (VD4) between the so-called "Green Cross" at the intersection with the D91 and the village of Feins. A departure is possible in each commune crossed by the circuit or from the pond of Boulet - Bike Promenade sheet® available in Tourist Offices and Town Halls: Free
Combourg