Most of the route takes place in woodland, and alternates between ascents and descents at altitudes of between 0 and 140 metres. Don't hesitate to jog along the banks of the Seine to warm up, as the loop begins steeply uphill and rises above Villequier. You'll then cross the Barre-y-va beech forest and enjoy a lovely view of the Brotonne Bridge as you descend to Caudebec-en-Caux. You will then reach the Trait-Maulévrier national forest, with its beautiful stands, and pass through the villages of Ste-Gertrude and St-Arnoult. This black loop with its many restarts will suit experienced trail runners looking for a long outing.