Rondje Château de Chalonge en ZAD

The ride

Roll out of La Grigonnais and follow the route along the L'Isac river before joining the Canal de Nantes à Brest at the Bief de Partage. Further on you pass the Château de Chalonge and ride by the ZAD nature reserve before the loop brings you back to the start. The 75.5 km is fully paved, with 342 m of climbing along the way.