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Start from the Granges de Port-Royal car park. On the small access road, from the D91 south-west of Voisins-le-Bretonneux, pass the ‘no entry after 9.00 pm’ sign and find the car park on the right.
There are numerous signposts along this route.
No signposting
(S/E) Facing the buildings, turn left and walk in the opposite direction along the access road to the car park. At the Stop sign, follow the D91 to the right for a few metres.
Yellow markings
At Chemin des Mollerayes on the opposite side, turn right onto Chemin de Jean Racine (sign for “Pedestrian crossing”). Pass through a forest gate and head steeply downhill, keeping to the right of a fence.
Yellow + Blue and White markings
(1) At the bottom, turn right towards Les Cent Marches, staying on Chemin Jean Racine. Walk along the left-hand side of the wall of the former Port Royal Abbey and enjoy a beautiful view through a wide gap. Continue along the wall and ignore the path leading off to the right towards Les Cent Marches.
(2) After the last building (a dovecote on the left), continue along the gently ascending path and ignore a few paths branching off to the right that climb steeply. At a Fork in the road (clearly signposted on site but not shown on the map), take the path on the right (the narrower one). Climb slightly and go round a few fallen trees (for an alternative route, see the practical information).
(3) At the junction with a steep path descending to the left towards a track crossing the Rhodon, continue straight on (west). Climb gradually and note the stream below. Leave it behind and climb a steep slope dotted with birch trees. At the top, veer left and stay along the edge of the slope, on fairly level ground. Ignore a path branching off to the right and descend slightly.
Blue markings
(4) At the next junction, continue straight on towards Le Mesnil-Saint-Denis. Climb gently, staying close to the edge. Cross a very narrow railway track running flush with the ground (a remnant of an old quarry?) and turn left. Wind your way along, alternating between gentle ascents and descents, until you reach a junction at the boundary of plots nos. 21 and 20.
No signposting
(5) Then follow a wide path to the right heading north-east. At the Carrefour de la Minière, take the third path on the left (bridle path, Yellow Cross) towards the Chêne Brûlé.
(6) At the Carrefour de la Mare Savin, immediately turn right onto a forest track (north-east). Pass a forest house on the right-hand side and arrive at the Carrefour des Huit Routes.
(7) Then take the second path on the right, towards Port-Royal. Follow this very wide gravel track flanked by two streams and, at the fork in the road, continue straight on towards Port-Royal. At the next fork in the road, go straight on again, still on the wide gravel track. Ignore a path on the left, skirt a patch of birch trees on your left and leave the forest. Walk alongside a field on your left and continue along the track to the car park (S/E).
Visorando Member
Moderate 
