We will continue this third stage of 135 kilometres in the direction of the Ain department, passing by the castle of Chevreaux, situated at an altitude of 473 metres. It dominates the Bresse plain, an idyllic setting for a first aid station in the heart of the castle ruins. The second refuelling point will be at kilometre 100 on the side of the castle of Cornod, one of the most impressive domains in the area. Cornod is one of the most important aristocratic buildings in the Burgundy-Franche-Comté region. Built in the 14th century on medieval remains, it was also owned by the Count of Montaigu. With 7500 m2 of living space, the immensity of this castle makes it a jewel of the Jurassian heritage.