Departure from Villiers-Neauphle-Pontchartrain station (line N between Paris-Montparnasse and Dreux).
(S/E) With your back to the station, walk down to the right, staying on the pavement towards Route de Beynes. Follow this road and walk past the Renault factory on your right. At the crossroads, take the road on the right, with the white fence on your right. Walk under the factory's pedestrian bridge and continue towards the level crossing.
(1) Cross the road carefully and take the grassy path on the left, just before the level crossing. Walk along the railway line on your right for about 1 km.
(2) At the end of the grassy path, first turn right then left across the level crossing and take a path that descends into the fields. This path will gradually climb to the right, passing under high-voltage power lines: you will see the village of Villiers-Saint-Frédéric in the distance on your right. When you reach a T-junction, turn right towards a dog training centre. Cross theGR®1and continue straight ahead for about 200 metres with horse paddocks on your right.
(3) At the fork, leave the path on the left that goes uphill and take the one on the right that runs alongside a wooden fence and horse paddocks. Continue along the path for 600 metres with a sloping wood on your left to reach the Mare des Forceries, which may be a good place to stop for a snack. Take the small pavement on the right that runs alongside a stone-coloured house on your right.
(4) First turn right then left into Rue de la Source to take Sente des Ruelles. At the end of this path, cross the street and take the pavement opposite, walking alongside the houses on your left. Villiers-Saint-Frédéric Town Hall is on your right, across the street. After 20 metres, on the left, go under the porch to see the church more closely in the farmyard.
(5) Retrace your steps to pass under the porch again and turn left. Stay on the pavement, walking alongside the houses on your left, and continue for about 200 metres.
(6) Take the Sente des Écoles on the left (no sign). Go to the end of this path and, facing the school, turn left. Ten metres further on, go through a wooden gate to reach a rest area with a pétanque court. This is the Sentier de l'Orme Imbert, which you should follow for about 1 km, with fences and houses on your right and woods on your left, then fields on your right. Ignore all the paths branching off to the right and look for an orientation table along the way.
At the end of this path, ignore the steps leading down to the right and take the steps leading up to the Route de Saint-Germain. Cross the road with caution as there is no protected crossing and visibility is poor. Take the staircase opposite: this is still the Sentier de l'Orme Imbert. Opposite, take Rue Saint-Jean, which crosses the old Grand Marnier distillery on the right and left.
(7) At the crossroads, turn right towards the church and take the first street on the left to reach the Place du Marché in Neauphle-le-Château. Cross the square and take the Grande Rue at the end on the right: it is narrow and cobbled but not pedestrianised, so watch out for cars.
This street slopes gradually downwards, offering a beautiful, unobstructed view to the west. At the traffic lights, cross the road at the pedestrian crossing on the side of the water fountain to reach the Sente du Fond des Granges slightly to the right. This path descends until it crosses a road, which you take on the left.
(8) Opposite the cemetery, ignore the dirt track on the right and take Rue des Deux Neauphles, also on the right. Continue straight ahead for about 1 km, crossing Rue de la Vierge. At the end of this street, go under the railway bridge in front of you and join the station square on the right (S/E).