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Set off from the town hall car park, Chemin du Saint-Sacrement.
(S/E) From the car park, head back onto the D13 (Route de Chevreuse) and follow it to the left. At a Fork in the road, continue to the right on the D13. At the next junction (cross), turn right onto the Route de la Garenne.
(1) After about a hundred metres, leave the road and take a path on the left. Walk alongside a woodland on the left, continue between two fields and pass under a power line. Carry on along the edge of a property on the right. Cross the D191 carefully and continue straight ahead onto the Chemin de l’Hirondelle.
(2) At the end, turn right onto Rue de l’Hirondelle. Go straight on, ignoring the street on your right (Rue de la Mairie); at the end, turn right. rejoin the D91, follow it carefully, and pass in front of the Château de Mareil-le-Guyon.
(3) When the D91 bends to the left, leave it and continue straight on along a small road, following theGR®®11(red and white markings). After about 150 m, take the first path on the left, leaving some sheds on your right. Further on, ignore a path coming from the left and reach a Fork in the road just before a power line.
(4) Take the path furthest to the left and leave theGR®® behind. Walk alongside the Étang de Bazoches and cross the D23. Continue straight on, walk past a cemetery and join the D13.
(5) Cross the road carefully and follow a path slightly to the right (the Chemin de l’Évêché). Initially, this path (which is wide enough for a vehicle) goes uphill. At a narrowing, turn left at a 90° angle. Continue through the woods, heading south-south-west. Ignore the paths coming from the right and carry on south.
(6) At the 171-metre mark, take a path on the right. At the various junctions, go straight on. Pass by the foot of the Rocher Marquant on your right and note the Louis Carré house on your left. At the end of the track, turn left and you’ll immediately find the entrance to the Jean Monnet Museum (open all year round) on your right and the entrance to the Louis Carré Museum (open seasonally) on your left.
(7) Walk down the street (Chemin du Vieux Pressoir). At the small car park on the left, take the road to the left. After about fifty metres, at the Fork in the road, turn left (the other road will be below) and continue until you come to a path on your right.
(8) Take the path on the right, go downhill and cross the Ruisseau Guyon via a wooden footbridge. Go uphill on the other side. You’ll come out onto another path; follow it to the left. Opposite a house, at a place called L’Aunay Rogrin, continue along the path which turns to the right. Ignore the turn-offs to the right and pass under a power line.
(9) Cross the road and continue along the small road opposite. About 300 metres further on, take the path on the right and head up into a woodland. Then ignore the paths on the left and right until you reach a road (Rue du Coteau), which you take on your left.
(10) When you reach the crossroads, take thesecond street on the right (Rue au Bouet). Continue along this street until you reach a three-way junction and take the left-hand street (Rue de la Borne). Go straight on until you reach a T-junction and turn right. Then ignore the street on the right (Rue Chenotel).
(11) Enter the park on your left. Pass a tennis court on your left, join the D191 and walk alongside the château on your right.
(12) At the corner by the château, turn right onto Rue du Moulin. You’ll see a washhouse and the superb Moulin mansion on your left. Continue along this road and pass through the hamlet known as Le Jardin.
(13) At the T-junction, turn left. Pass several houses on your left until you see a pony club.
(14) Just before the pony club, take a path on the right. Follow the Brûlins stream for about 1 km.
(15) At the end, turn right and follow theGR®®1. Pass the Carrefour des Brûlins, follow a cycle path and reach a car park. Walk past the car park on your right and continue along the access road. At the edge of the Étang de la Plaine, leave the road and turn left onto a path that goes round the pond on the right (still following theGR®®). At the far end of the pond, at a Fork in the road, carry straight on with the GR®®.
(16) At the junction, take Rue du Château Gaillard straight ahead. Ignore a street on the left, turn right and head downhill to Rue de Sance, which you should follow to the right.
(17) After crossing a street on the right-hand side, climb the steps on the left (still on theGR®®). Reach Rue Maurice Ravel and follow it to the left. After about a hundred metres, take the steps on the right to climb up to the Tour d’Anne de Bretagne (magnificent view).
(18) Go down the other side to reach Rue Saint-Laurent, which you should follow to the left. On this street, after passing through the Porte Bardoul, go down the steps on the right. Then, turn right onto Rue des Fosses and walk alongside the cemetery on your left. At the end, turn right and then left to reach the church.
(19) Leave the church on your right and take Rue de Dion. Walk past the Hôtel Saint-Laurent on Place Lebreton. Continue to Rue de la Moutière and follow it to the right.
(20) At the end, take Rue Christian Hazard on the left. After about 150 m, turn right onto a path between the Ernest May Stadium on the right and the wall of the Château de Groussay park on the left. Turn left along the path and, after passing a sewage treatment plant, you’ll reach a T-junction.
(21) Turn right here and head east-southeast between the fields. Ignore a path branching off to the left and, at the next junction (marker 107), continue straight ahead. Pass under a power line, ignore another path branching off to the left and arrive at the D191 (with a garage on the left). Cross the D191 carefully and continue along a small road opposite. Take the first track on the left (marker 95). After a bend to the right, carry on straight ahead (north-east). You’ll come out onto a road; follow it to the left. At the Fork in the road, turn right. After 200 m, you’ll rejoin the D13; follow it to the right until you reach the car park (S/E).
Visorando Member
Moderate 
Easy 
