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Departure
The hike starts at Place du Château in Thiers-sur-Thève.
A shaded car park has been provided (S).
No signposts
Turn right onto Rue Fontaine du Gué and then left onto Rue du Pont Chantrel, which curves to the right a little further on.
GR® markings (red and white)
(1) You can see theGR® markings at the edge of the forest, near a water tower and the end of a track coming from the left. Continue straight ahead, following a wire fence on your right until you reach a Y-junction where each forest track is closed by a barrier. TheGR® continues straight ahead.
No markings
(2) Turn left. The track passes between forest plots 231 and 232 (the numbers are not very visible). Continue along this track, which winds for about 2.5 km, crossing several crossroads. As you go, you can see the more or less visible markings for plots 231, 201, 200, 201, 159, 177, 115 and 20. At the crossroads at the end of plot 19, turn right onto the path between plots 19 and 20 and continue to the next crossroads where you will find a GR® signpost.
(3) Turn left onto theGR®11marked path at the barrier. TheGR® turns left two hundred metres further on. Leave it and continue straight ahead on the path that winds for one kilometre, always crossing the various crossroads you encounter straight ahead. As you approach the A1 motorway, which you cannot see but can hear very clearly, turn left and follow the wire fence that protects it from large animals.
(4) You will arrive at the gate of the "La Croix des Ormeaux" property (sic). Turn right. After about a hundred metres, at the edge of the forest, turn left onto the small road that will take you to the entrance to Senlis after crossing a cultivated plain. Continue to the bridge over a stream of the Nonette.
(5) Turn left onto Impasse Sainte-Marguerite.
(6) At the end of the cul-de-sac, turn right into the narrow passage leading to a postern gate in the old town ramparts. Continue along Rue de la Poterne, then Rue des Vignes from the junction with Rue de Meaux.
Cross the square, which has been converted into a car park, to reach Rue de la République. Turn left onto Rue Bellon and climb the stairs between the Allianz and BNP Paribas banks.
Cross the car park and take the passageway on the right, which runs alongside the church. This will take you to Place André Malraux.
Continue right along Rue aux Flageards until you reach the entrance to the cathedral.
(7) Cross the nave of the cathedral and turn right at the exit onto Place du Parvis Notre-Dame, heading towards the Tourist Office. Turn left onto Rue du Châtel and enter the courtyard on the right at No. 41. Go to the end of this courtyard to exit onto Rue Saint-Péravi. Continue straight ahead to reach Rue de la Treille, where you turn left.
Then turn right onto Rue du Châtel. Continue straight ahead on Rue Vieille de Paris and turn right at Square des Etats-Unis. Cross the square and turn right onto Rue du Haume. At the end of this street, turn left onto Rue de la Montagne Saint-Aignan and continue to Boulevard des Otages, where you will turn right.
At the next crossroads, 100 metres further on, you will join a GR® marked trail.
GR® markings (red and white)
(8) Now turn left onto Rue de la Fontaine des Arènes. When you reach the end of this street, turn left onto Rue du Chemin du Roy, then, after crossing a stream and walking alongside vegetable gardens, continue right onto Rue du Quémiset. Continue along Rue de l'Hôtel Dieu des Marais until it turns left, where you take the path straight ahead.
After walking alongside another area of vegetable gardens, you will reach a tarmac road near a water treatment plant.
(9) Turn right and follow this road for about 300 metres.
(10) Turn left onto the path at the corner of a riding school and follow the clearly visible markings. The path winds its way to a wide forest track, which you take to the left in front of a gate and a wire fence.
(11) At the next crossroads, turn right. Follow the fence of the racehorse track for about two kilometres, then continue straight ahead along a galloping track (walk on the part designated for pedestrians).
After about 500 metres, at the corner of plot 138, leave theGR® and take the path on the left.
No markings
(12) This path heads south and runs alongside plots 141, 147, 152, 153, 170, 171, 187, 186, 212 and 219. At the crossroads, continue straight ahead between plots 211 and 218. You will reach the Vignettes signpost. Continue straight ahead along the Route de la Vignette towards the Fût Madame crossroads.
At the Maison forestière de la Vignette, you will find GR® markings.
GR® markings (red and white)
(13) Turn left at a 90° angle and follow the forest road that takes you to the Château de Pontarmé.
(14) Turn left, cross the D1017 and then turn left towards the calvary erected in memory of the bombing of La Table Ronde in 1944. Turn right onto the path running along the edge of the forest. It passes a few ponds as it follows the banks of the Thève.
Shortly after the ponds, you will pass a few houses, then a meadow.
No markings
(15) At the end of the meadow, turn right just after an isolated pavilion. TheGR® continues straight ahead. Follow this path to Rue du Pont Chantrel. Turn right and follow the road back to Place du Château.
The hike is now complete.
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Beautiful hike, with forest trails made easy by the plot numbers. We will return with a group of hikers.
Visorando member
Difficult 
Association / Club / Walk leader
Easy 
