Roll out of Hersin-Coupigny and let the route unfold: first along the river La Lawe, then the Loisne, before the landscape opens into the Réserve naturelle des marais de Cambrin, Annequin, Cuinchy et Festubert. That nature reserve sits roughly halfway, a fine place to pause before the canal D'Aire carries you onward. The 62.2 km mixes half paved and half unpaved riding with 217 m of climbing, and the loop brings you back to where you started.