Head to Rambouillet and park on Rue Félix Lorin.
(S/E) Continue south-west along this street until you reach Rue du Poteau des Trois Seigneurs.
(1) Turn left onto this street, taking care to watch out for traffic. Pass Rue du Haras and you’ll immediately reach the bridge over the Drouette. Look for theGR®1junction.
(2) Turn right onto theGR®, follow the Drouette river, and you’ll reach the Petit Gril junction.
(3) Cross the Route du Petit Gril to continue on theGR®, walk alongside a pond to reach the bridge on the Route des Éveuses.
(4) Turn right and, just after the bridge, veer left to rejoin theGR®1and follow its signposting. Continue along the edge of the pond. At the far end of the pond, theGR®1performs a circular loop back towards the pond. At the junction, turn left onto Rue du Château d’Eau. You will then reach a multi-way junction where there is also a car park.
(5) Turn left and continue along the tarmac track beside the pond. You’ll reach the junction with the Route des Éveuses.
(4) Carry on straight ahead, following the same route as on the way out. Follow this path all the way back to the car park on Rue Félix Lorin (S/E).