The Circuit des Arcades of the Rigole de Vioreau canal
Walker 
7.72 km
+52 m
-52 m
2h 20
Moderate
Departure from Nort-sur-Erdre (Loire-Atlantique)
Discover an unusual trail, following the banks of "La Rigole Alimentaire”, a small canal feeding into Vioreau Pond. The canal crosses the valley of the Erdre thanks to four aqueducts with eight to ten arches and travels underground over 600 m. It is, moreover, spanned by many picturesque stone bridges... During your walk you can admire the Castle of La Lucinière and the wooded area on the other side of the Valley of Erdre.
Cens, Erdre and Gesvres, three streams of Nantes
Walker 6.46 km
+19 m
-19 m
1h 55
Easy
Departure from Nantes (Loire-Atlantique)
An easy hike along three streams: le Cens, l'Erdre, and le Gesvres. Nature within the town of Nantes.
Sillon de Bretagne from Cordemais
Walker 
10.12 km
+93 m
-93 m
3h 10
Moderate
Departure from Cordemais (Loire-Atlantique)
Circular walk following the Sillon de Bretagne path. Dog friendly.
Marais du Fresnier trail
Walker 8.72 km
+45 m
-45 m
2h 35
Easy
Departure from Savenay (Loire-Atlantique)
After the lake of Vallée Mabile, the path leads the hiker below the Sillon de Bretagne to the marsh and its moat lined with trees and reeds, populated by grey herons feeding among the cows. You may also come across the corncrake, the bird with the most distinctive song.