The route first runs alongside the Loire, then turns inland towards Saint-Florent, where the view is superb. It then descends towards Lion-en-Sullias, where you should not miss the kilometre marker on the D951 indicating that you are equidistant from the source of the Loire (Mont Gerbier des Joncs) and Saint-Nazaire. It then leads to the greenway, where you can observe the many birds on the gravel banks in the middle of the river. Osprey? Garden warbler? Little egret? In Sully-sur-Loire, you will pass by the foot of its magnificent castle, which is reflected in the water of its wide moat.