Coming from Clermont-Ferrand: Motorway A89, exit 31 (Noiretable - St-Just-en-Chevalet) then on the D53 direction St-Just and Roanne. After St-Just, then D31 left direction "La Croix-Tréving". First crossroad on the left (Les Fôts, Les Pras, Le Petit-Marais)
Coming from Lyon or St-Etienne: Motorway A72 and A89, exit 32 (St-Germain-Laval, Boën), then D8 direction Roanne - Villemontais. In Villemontais, D53, on the left, direction St-Just-en-Chevalet. After Moulins-Chérier, D31, direction La Croix-Tréving.