Park in the small square in the centre of Chavençon.
(S/E) Pass by the church and head north-west. Leave the village via the small road. Walk along a pretty little pond.
(1) At the crossroads, turn left and follow the wide dirt track heading west.
Follow this path for 1 km until you reach a D3 road, which you cross to continue on the path directly opposite. It climbs gently towards a copse.
(2) Take the first wide path that branches off to the left between the fields. You will soon see the promised menhir at the edge of the small wood opposite. Pass a few metres past it before a small bend to the right to reach a Y-junction.
(3) Follow the grassy path on the left that leads towards the houses. Cross the hamlet of Romesnil, going down Rue de la Pierre Frite until you reach a T-junction.
(4) Turn left onto the small road that heads towards the forest and descends to a small bridge, then climbs quite steeply under the tall trees. After a left turn, you will see a long straight road with the Château de Saint-Cyr at the end.
Continue to the château and take the small road on the left, then the path heading north, which continues as it turns right.
(5) Return to theGR®11, which is marked in white and red and also follows aPR® marked in yellow.
The path leads through woods and fields to the small hamlet of La Mendicité.
(6) Cross the D3 coming from Neuilly-en-Vexin and take the small road opposite. TheGR®11follows it to Chavençon (S/E).