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Parking is available in the car park at Vauhallan town hall, located just behind the building on the Grande Rue, which can be reached via a ring road (Chemin des Sablons). If the car park is full, look for a space along the Grande Rue. Vauhallan is about 15 kilometres south-west of Paris. Access via the N118 or the A10 then the D144.
No signposts
(S/E) When you leave the town hall car park, turn left onto Grande Rue du 8 mai 1945. After a few metres, turn left into the narrow street that climbs behind the church and goes around it on the left. Pass in front of the church entrance and go back down to Grande Rue.
(1) Immediately turn left at an acute angle onto Rue de l'Église. This street curves to the right, crosses a stream and ends at a crossroads (wash house and fountain on the right).
Red and white + red and yellow markings
Take the street opposite (Chemin de Limon, signposted "Impasse"). The street becomes a path lined with steps on the left and a wall on the right. The path turns left, climbs and leads to a road.
(2) Follow the road to the right. After a few dozen metres (post box on the left, bench opposite), the road turns right. Note a dovecote on the left and pass the entrance to the Benedictine Abbey of Limon on the right. At the fork that follows, take the left-hand path. About 50 metres further on, at the start of a fence on the left, turn left at a right angle and follow the Joliot-Curie stadium. The path descends and leads to a crossroads below the stadium.
Yellow markings
N.B. Between points 3 and 5 below, the purple route on the IGN map is not up to date. Follow the route and description: the paths are real, they are clearly visible on the satellite view and the markings on the ground indicate these paths.
(3) Then turn right (signposted "Chasse gardée"), still alongside the stadium (ignore the signpost indicating a left turn). Enter the woods, follow a stream on your right and ignore a path branching off to the left. Continue along the edge of the woods (on your left) and the field (on your right).
Cross the stream on a wooden footbridge. Further on, cross the stream again, but this time by fording it, and continue along the path through the woods. At the end of a hairpin bend on the right, turn left at a right angle and climb a small embankment to reach a wooden bridge over the stream.
(4) At the end of the bridge, take a wide path on the right. Follow the stream on your right. Note the sandstone markers decorated with a fleur-de-lis at regular intervals on the left side of the path.
(5) Cross a small road and continue straight ahead. Walk with the greenhouses and the bell tower of Saclay church on your left. Walk alongside a farm (on your left) and cross the D60. Continue on the path opposite and you will come to another road at the entrance to the village of Saclay (bridge).
Yellow + red and yellow signposts
(6) Turn right onto the road and cross the bridge over the ditch. When the road bends to the left, turn right onto the path between two metal beams stuck in the ground. Walk across the fields, heading east-northeast. Descend slightly, cross a stream and go up the street opposite with houses on your right.
Yellow markings
(7) At the crossroads at the top of the hill (entrance to Vauhallan), take the bridge over the Favreuse stream (leave theGRP® on your right and continue on the small road opposite (north-east). With meadows on your left and woods on your right, head towards a large building. At the three-way junction, at the corner of the property wall, turn right towards the Ecuries de Favreuse. Follow the wall on your right, pass the entrance to the property and, further on, continue on the road between the Ecuries de Favreuse buildings (on your left) and a farm displaying its organic farming practices (on your right).
(8) At the corner of a wall on the left (tree with a yellow marker), continue straight ahead on the path that leads through the fields towards a wood (ignore the path that branches off to the left). Enter the woods and ignore the first path that branches off to the left. A few dozen metres further on, at a fork, take the left-hand path. This will take you to a cycle path that runs alongside the Favreuse stream. Cross the path and then the stream via a small bridge. Immediately turn right onto a path (not shown on the map) that runs alongside the stream on your right.
Yellow + red and white markings
(9) Cross a small road (bridge on the right, do not take this road) and join the cycle path that curves to the right. Continue south-west on the cycle path, following the stream (on your right) and ignoring the paths on either side. You will see the town below on your left. Shortly after a small green metal gate on the left and before the path bends to the right, take a path on the left (not shown on the map) that descends quite steeply.
At a fork, take the left path and continue downhill. At a T-junction (fence and houses), join theGRP® and turn left. Continue downhill until you reach the Grande Rue du 18 mai 1945. Take the street on the right and continue to the town hall (S/E).
Visorando member
Moderate 
Association / Club / Walk leader
Very difficult 
Difficult 
