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The hike starts at Bourg-la-Reine station (RER line B).
(S/E) Exit the station towards Rue André Theuriet. Cross the crossroads and turn right into Rue André Theuriet. After 200 metres, leave Rue André Theuriet, which turns left, and continue straight on towards the Château and Parc Départemental de Sceaux.
At the end of the street, you will arrive at a park enclosed by a high fence.
Red and whiteGR® markings
(1) Turn left onto the street that goes downhill. Go to the crossroads and then turn right onto the wide avenue lined with four rows of trees that goes up towards the Château de Sceaux (this is the Allée d'Honneur).
Cross the car park in front of the park entrance and enter the park. At the first crossroads, turn left and, at the corner of a building, turn right into an alleyway where photos on various themes are usually displayed.
You will arrive at the rear of the château, where you will have a beautiful view of the French-style gardens. Continue along the left-hand side of the gardens. You will see the Grand Canal below you on your left.
(2) At the crossroads after the Grand Canal, take the sloping path on the left which leads you down to the lake.
Turn left, then right (you can take a short detour to get closer to the water) and, at the next crossroads, turn right into the path that crosses a large orchard.
At the end of the lane, go around the French-style flowerbed on the right and turn right into the lane leading to the Hanover Pavilion, which you can see straight ahead.
(3) Go around the Pavilion on the right and exit the park. Cross the avenue and, after a quarter turn at the roundabout, take the Grande Voie des Vignes de Châtenay-Malabry. You will pass the École Centrale-Supélec on your left, then sports fields on your right, and arrive at a junction with a cycle path (the Coulée Verte), where theGR® turns right and left.
No markings
(4) Continue straight ahead to the end of Grande Voie des Vignes. Cross the crossroads and take Rue Sainte-Catherine opposite, which leads to the church. At the next crossroads, turn right onto Rue de l'Église. Turn left in front of a brasserie, then left again onto Rue Voltaire.
At the end of this street, turn right at the crossroads and continue until you reach a large avenue (the D986), where you turn right to go to the roundabout. Cross the D986 (Avenue de la Division Leclerc)
(5). Turn right onto Rue de l'Égalité. After passing the cemetery, you will arrive at Square Paul Vaillant-Couturier.
YellowPR® markings
At the end of the street, continue straight ahead onto the yellow-marked path that enters the woods. Follow the markings carefully, as several paths of varying distances could lead you astray (the markings are clearly visible). The path climbs steadily and then turns right as it approaches the A86 motorway, where you can hear the traffic noise. It winds its way through the woods.
You can see residential buildings through the vegetation. At the corner of the fence surrounding these buildings, turn right.
No markings
(6) The path descends, following the wire fences of various properties, then climbs again to pass alongside the Haras de la Porte de Saint-Leu.
Turn left, then left again at the Belle Fille crossroads. This road takes you to the entrance to the A86 bridge.
Red and whiteGR® markings
(7) After the bridge, at the Carrefour des Quatre Arpents, take the Genetrière forest road. At the Carrefour des Noisettes, turn right.
At the next crossroads (signpost in the middle), turn left onto the Sygrie forest road, which winds down to a crossroads near a rainwater retention basin.
Continue straight ahead (with the basin on your left), pass under the N118 bridge and turn left towards Bièvres.
(8) You will pass the Photography Museum and then the "Cholette" bus stop for bus 15.
(9) Immediately afterwards, turn right onto Rue des Clairs Matins and continue straight ahead on the path that climbs towards the woods. At the top of the hill, the path turns left and winds its way to Chemin de la Creuse Voie, which you take on the left.
Follow it for 150 metres and enter the woods, following the Sentier Serge Antoine. After about 100 metres, at the end of the right-hand bend, take the steps on the left that lead down to Chemin de la Creuse Voie.
At the crossroads, turn right. The path continues downhill, ending under a porch where an old millstone and hand press are on display.
Go down the few steps to reach the road, cross the street and take Rue de la Terrasse opposite. Turn right into Rue des Petits Ponts, which crosses the Bièvre, and turn left into Rue des Prés. At the end, turn left and, at the edge of the Bièvre, turn right onto Sentier de la Bièvre.
(10) Now follow the Sentier de la Bièvre. It will take you under the N118, past a reservoir, a meadow and a golf course, and bring you to Verrières le Buisson on the D60.
(11) Walk along the D60 with a housing estate on your right and detached houses on your left. Continue and, at the crossroads, turn left towards the town centre.
No signposts
(12) A few metres further on, turn right into Allée de la Garenne. This leads to a small park with a pond. Cross the park and go around it until you reach Allée de Chartres, then continue to the end of the road.
Red and whiteGR® markings
(13) Cross the crossroads and turn left onto Coulée Verte. It winds its way along the TGV railway line to Rue du Colonel Fabien, which you do not cross.
YellowPR® markings
(14) Turn right onto the concrete path that descends. At the crossroads, cross the street and enter Parc Heller in the town of Antony.
Continue on, passing Molé's tomb and, a little further on, walking alongside an equestrian centre and sports fields. Continuing on, you will arrive at the Château de la Propriété de Castries and exit Parc Heller onto Rue des Sources. Turn left.
(15) In front of the Moulin de la Seigneurie d'Antony, turn right onto Rue du Moulin.
At the end of this street, turn right and then left onto Rue de l'Abbaye. At the junction with Rue du Clos de l'Abbaye, thePR® turns left.
No signposts
Continue straight ahead along Rue de l'Abbaye, which will take you to Antony station on RER line B after about 500 metres (S/E).
Visorando member
Easy 
Moderate 
