Loop in the Vexin region starting from Santeuil

Departure from Santeuil-le-Perchay station (Transilien line J). The hike is a loop; motorists can park in the small, free car park at the station.

(S) With your back to La Viosne, head south-west along Rue de la Tour de Viosne (do not enter the village).

(1) At the triangular junction, turn right into Rue des Epagnes, then left into Chemin des Basses Ruelles.

(2) Enter the woods, cross the Couleuvre and enter Vallière.

(3) Turn right, pass a pumping station and continue straight on to the Vallière pond.

(4) Go around the pond on the right, following the Couleuvre.

(5) Turn right into the fields and head uphill.

(6) At the intersection, turn left onto Sentier des Eragnes, still in the fields, and you will come to a road.

(7) Turn left to enter the woods and cross two streams.

(8) Turn left towards Moulin Neuf, then the Moulin de Gouline pond.

(9) At the mill, continue straight ahead on the PR® trail, following the Couleuvre stream, passing by the water sources.

(10) At the edge of the woods, cross the fields and arrive at Commeny, which you cross via Rue du Stade. Pass in front of the water tower and the museum to reach Grande Rue.

(11) Turn right, pass in front of the Town Hall, then continue straight ahead.

(12) Turn right onto Rue de Moussy (D159), with houses on your right and fields on your left. Stay on the D159 and, after leaving the village, turn left and continue for about 50 metres.

(13) Keep right with the PR® and enter a field. Ignore a path on the left leading to the antenna, cross a road and continue straight ahead following the Ravine. You will come to a five-way intersection.

(14) Continue straight ahead, go straight on at the crossroads and continue for about 200 metres.

(15) Turn right and enter a wood, pass a pumping station and arrive at the Moulin de Noisemont.

(16) Turn right onto the GR®1, walk along the edge of the Petit Bois through the marsh. You will come out onto a small tarmac road not far from the railway line and rejoin the PR®.

(17) Continue in the same direction along this road. Return to Santeuil-le-Perchay station (S/E).

There are no refreshment stations along the route, so remember to bring water with you.

1. Noisemont Mill.
2. Moulin Neuf.
3. Discovery trail in Moussy.
4. Wash house.