The walk begins at the car park at Mareil-sur-Mauldre station, where you can park.
(S/E) Head south along the path that runs alongside the railway line, veering away from it slightly at the Pont de Falaise.
(1) Turn left and continue along the Ru de Gally to La Maladrerie.
(2) Turn left onto the Chemin de la Côte de Chavoye.
(3) At the top of the hill, carry on straight ahead along the Chemin de Cheminet.
(4) Turn left onto the Cheminet, then turn right to walk alongside the Beurres housing estate.
(5) Turn left, then left again to go round the residential area.
(6) Follow Avenue de la Chardonnière to the right through Parc de Mareil until you reach the roundabout.
(7) There, turn left onto Avenue de la Côte Barbe, then turn left at the first road. Pass in front of Les Crayons Nursery School, then turn right onto Allée Pierre Scieux, which you follow until you rejoin Avenue de la Côte Barbe. This leads onto Avenue de Chavoye.
(8) Follow it to the right until you reach Rue Christian Pouillard. Turn left onto this street, which leads to the car park at Mareil-sur-Mauldre station (S/E).