Departure from Maurecourt station, accessible from Saint-Lazare station, train J towards Mantes-la-Jolie.
(S) Take Rue du Bel Air and follow the railway line, which is on your left.
(1) Turn left onto Avenue des Robaresses, then take a small path on the right called Sentier des Favrils.
(2) At the crossroads, turn left onto Rue des Martyrs de Chateaubriand and follow it to the end.
(3) Climb the stairs and cross Avenue Jean Moulin with care. Continue straight ahead on the Sente des Fonceaux, marked PR® Yellow. Then turn right to follow the Chemin des Charvaux across the fields. Head straight on until you reach a T-junction.
(4) Take the Chemin de la Folle Rue on the right and, after a short stretch of woodland, continue straight on along the Chemin des Groux until you reach the Sentier du Haut des Buis. Continue left to Rue Alexandre Deneufchatel and turn left again until you reach the hairpin bend at the edge of the woods.
(5) Turn right onto Chemin du Tartaleau. Walk alongside the woods until you reach Rue de l’Hautil. Take the street to the left for about a hundred metres, then turn right onto a path that leads you between woods and fields.
(6) Continue straight on, passing the Maurecourt cemetery. Cross Rue de Pontoise, then Avenue de l’Ancienne Gare, and continue straight on along Chemin de la Ville de Paris.
(7) Walk past Maurecourt’s municipal stadium, cross Rue de Choisy and continue straight on along the Sentier de la Saussaie to the banks of the Oise.
(8) Turn right onto Promenade Ar Zenith, following the River Oise.
(9) Go under the Pont Eiffel in Conflans-Sainte-Honorine, then under the Conflans bridge, and continue along Avenue du Général de Gaulle after the confluence with the Seine. Ignore all turn-offs to the right and you will come to a road near Île Nancy.
(10) Continue left along this road, known as Boulevard Noël Marc. At the Espace Julien Green, first turn right then left to reach the Clos des Vignes residential complex. Turn left, passing in front of Place Chantepleure and then the Church of Saint-Germain.
(11) Make a right-left-right turn and continue along Rue des Courcieux. Cross Rue des Écoles and pass in front of École Élémentaire Saint-Exupéry. At the Jardins Maupassant residential complex, turn left onto Rue du Clos Malot and arrive at Bras d’Andrésy.
(12) Turn right onto Quai de Seine and walk for about 1 km.
(13) Turn right onto Rue Georges Delamare, right onto Rue du Général Leclerc, then left onto Sentier de la Graux Choux, which leads onto Avenue Maurice Berteaux.
(14) Turn right onto it and follow the avenue to reach Andresy station (E).