Parking at the SPA car park in Saint-Apolline, Plaisir (78).
(S/E) Take the path after the barrier and continue straight ahead until you reach a five-way intersection.
(1) Turn into the first lane on the left, a wide lane that leads to the Charité crossroads. Leave the main path and continue straight ahead. The path meets a lane; take it on the right and continue straight ahead until you reachthe second crossroads.
(2) Turn right and follow theGR® (red and white markings) which leads to the Château. They pass through the Carrefour de Lurifico and reach a crossroads just before the entrance to Plaisir.
(3) Continue on theGR® trail to the right uphill. It crosses Chemin du Pré Pollet, passes near a pond, then descends again. Further on, pass under high-voltage power lines before arriving at a clearing at the edge of the forest.
(4) Take the path on the left that leaves the forest and enter the town via Rue Edmond Rostant. __Caution_ when crossing the town, use the pedestrian crossings.
At thefirst crossroads, turn right onto Rue Ernest Lavisse, cross Rue du Bois and reach Rue Jean-Jacques Rousseau.
(5) Turn left and follow Rue Jean-Jacques Rousseau to Place Saint-Pierre de Plaisir to begin a circular loop around the castle grounds.
(6) Leave theGR® trails, enter the park and walk around the pond and the castle, then exit the way you came in.
(6) From Place Saint-Pierre, take Rue Jean-Jacques Rousseau again to return to the crossroads with Rue Ernest Lavisse.
(5) Leave the outward route and continue straight on Rue Jules Regnier. When you reach the roundabout, continue straight on, cross at the pedestrian crossing, then continue uphill on Rue Jules Regnier until you reach the intersection with Rue Anatole France.
(7) Leave Rue Jules Regnier and head diagonally right into the forest via Chemin de Pontchartrain à Plaisir. Pass a car park and the high-voltage power lines, then continue straight ahead. At the Château Reyson crossroads, continue straight ahead on Route de Plaisir and onto the main path.
(8) You will arrive at a T-junction. Take the path on the left, and at the end of the path, turn 90° to the right until you reach the next junction, which you already passed on the way there.
(1) Turn left and return to the Saint-Apolline SPA car park (S/E).