The walk starts at the car park of the École Jean-Paul Riopelle, Place Jean Moulin.
(S/E) With your back to the car park, head towards Rue de l’Église and turn left onto it. Cross the Town Hall car park and take the steps to the left of it. Continue along Rue de la White Cross, then turn right into Ruelle des Moulins. Cross the D147 with care and take the red and white-marked path leading downhill opposite. At the bottom of the path, turn right into Rue des Fraîches Femmes. At the end, turn left into Rue du Château then left again into Rue Soignée to reach the banks of the Seine.
(1) Walk as close as possible to the right bank of the Seine, after crossing a small bridge, until you reach the ferry providing the crossing to Lavacourt. Continue along the path that climbs, head right and go up to the left along Rue du Port, then continue along Avenue Claude Monet. Turn right into Rue du Pontceau, then left into Rue de la Seine. Cross Avenue Claude Monet to climb the steps leading to the church. Walk past the church and turn right up Rue du Cimetière (red and white marker). Turn right onto Chemin des Champs-Mondeaux (signpost).
(2) Just after No. 7, at the junction, head down to the right onto a small path, then, at a fork, go left to reach Rue du Moutier, which you’ll take to the left. A little further on, take a short detour into Impasse du Lavoir on the right, then continue to a T-junction.
(3) Cross the D100 and take the alleyway opposite under a porch (10bis). At the T-junction, go up to the left then head right (yellow marker) onto Chemin de Chaudry. Continue straight on along Chemin des Vignes, ignoring a turn-off to the right (PR®), to reach a tarmac road.
(4) At the junction, walk back and forth to the opposite side (yellow marker) as far as number 19 on Chemin de la Vallée (wash house). On your return, continue along Chemin de la Vallée to the D147.
(5) Cross it carefully and head up the small path opposite. Ignore a turn-off to the left.
(6) Immediately afterwards, take the Sente des Prémoirs (sign) on the left to the cemetery.
(7) At the corner of the cemetery, ignore a path branching off to the right and continue along the Chemin des Champs-Crosniers, which turns north-east.
(8) At the T-junction, turn right onto Rue de Villeneuve, then right again onto Route de la Vallée du Roi. Ignore a turning on the right.
(9) At the fork, head up to the left along Rue de St-Cyr, continue along Route de Vienne-en-Arthies and turn right with the GR® at the next fork (red and white markings).
(10) At the stop sign, turn right with the GR® onto Rue du Parc to enter Saint-Cyr-en-Arthies. Continue to the entrance of the château, passing Allée des Tilleuls on your left, then further on take a short detour left into Rue de la Grande Vallée (wash house). Continue towards Vétheuil with the GR®.
(11) Turn right at the corner of the castle’s surrounding wall (signpost for hotel or motel on the wall). At the next junction, turn right and continue along the wall. Ignore a turn-off to the right to reach Route de la Vallée du Roi, which you’ll take to the left.
(12) After about 100 m, turn left onto a path marked in yellow, crossing a small bridge. Continue until you reach Rue des Moulins and carry on straight ahead.
(13) When you reach Place Roger Coquoin (with a wash house on the right), turn left onto Rue du Chesnay, cross the D913 with care and continue straight ahead. Immediately after the edge of the woods, at a crossroads, continue straight ahead. The path on the left does not appear on the map and the one on the right branches off at an angle (red sign saying “private road”). Further on, walk past the Vaulézard farm on your left.
(14) Take the sharp right-hand bend and, at the next fork, go left.
(15) At the crossroads, continue straight ahead (signs prohibiting fires and access to motor vehicles) until you reach the GR®2 (white/red markings) and take the hairpin bend to the right. Continue until you reach the tarmac road of Les Noues, which you will take to the right.
(16) After about 100 m, turn right onto a small path that climbs. At the T-junction, turn left then continue right onto the Chemin des Croiselles. Opposite No. 14, take the Sente Colette, pass under a porch and turn left then immediately right onto Rue de l’Église to quickly reach the start point on your right. (S/E).



