The walk starts at the Moulin de Lily car park.
(S/E) With your back to the mill, head straight ahead along Avenue du Moulin de la Planche until it ends. Cross Avenue du Général Leclerc carefully, using the pedestrian crossing on the left, before continuing straight ahead along a path running alongside a school. Turn right at the first junction. Cross Rue Marceau to reach the railway line.
(1) Cross the railway line via the underpass to reach Boulevard de Lozère. Turn right, then turn left at the next junction onto Chemin du Dessous du Rocher. Look for a dead-end road branching off to the right and follow it, then follow the path that continues from there. At the top of the hill, turn sharply left to reach Fort de Palaiseau and its two batteries.
(2) Carry on straight ahead to go round the fort. When you reach the road, continue to the left. Ignore the first junction, then at the second, take the path on the left, Chemin de la Hunière. Stay on this path until you reach the edge of the houses on the right. A few metres past the last house, take a path starting on the same side. Carry on straight ahead until you reach the cleared area where there is a Fork in the road.
(3) Take the middle branch. At the next junction, first turn right then left, then turn left again. Turn right when you reach the road (Chemin de la Vauve aux Granges) and leave it at the bend.
(4) Take the path on the left, then follow the one on the right back towards the houses. First turn left then right to walk alongside the buildings of a nursing practice. Cross the Route de Saclay and head opposite into a playground and picnic area. Turn right to stay within the playground and come out onto an avenue. Turn right and cross the Route de Saclay again to reach the Camille Claudel Eco-neighbourhood and the Place des Causeuses.
(5) Turn left. Continue straight on until you reach the woodland, where you’ll come out onto the Chemin de la Hunière et des Joncherettes. Turn right onto the path running alongside the road. Leave this path to enter the woodland on the right, rejoining it a little further on to the right. Once the path moves away from the road, continue along it until the next junction.
(6) Turn left, still on the Chemin de la Hunière. Cut across a path to stay on this track, then at the next junction, turn left. Turn left again at the end of the street, then right onto the first path, called the Sentier de la Vallée Française. Carry on straight ahead until you reach the next street, Rue du 11 Novembre 1918, and turn right. Turn left at the next junction to follow Boulevard Samson and go under the railway line.
(7) Turn left onto Rue Antoine Badour. At the end, turn left to go under the railway line again, cross Rue du 11 Novembre 1918 and carry on straight ahead to reach Saint-Martin Church.
(8) Carry on straight ahead. At the next junction, note the corner of the castle. Carry on straight along Rue de la Pie Voleuse and keep right at the T-junction to follow Boulevard Joseph Bara. Once at the end, turn left, then turn right to cross the bridge over the railway line and reach the next junction.
(9) Turn right onto Avenue de la République at the Théâtre de la Passerelle. Carry on straight ahead at the roundabout to reach the car park, then turn left onto Rue Voltaire and head for Place de la Victoire and the Hôtel Brière.
(10) Once on the other side of the square, turn right onto the street. At the next junction, carry on straight ahead along Rue de Paris and note the statue of Joseph Bara. Then take the first left, cross the 8 May 1945 car park and rejoin the departmental road (Avenue du 8 mai 1945) at the Curie/Einstein mural.
(11) Turn right and continue to Parc Jean-Pierre Chabrol. Cross the park via the Sentier des Marais and emerge onto Rue Blaise Pascal. Follow this street, turning sharply right. Take the first left, onto Rue Amable Tastu, and continue to where it ends at Rue Lazare Hoche. Turn left onto Rue Lazare Hoche to reach Rue George Sand.
(12) Turn right to reach the roundabout. Take the path on the right that runs alongside the Yvette and stay by the river until you reach the street. Continue to the junction.
(13) Turn right onto Rue du Parc à Foulons, then left when you reach the riverbank without crossing the river. Continue straight on along Chemin des Foulons.
(14) Turn right twice at the playground and cross the Yvette. At the junction, keep left and return to the starting point (S/E).