Country:
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Starting point and access: Montsoult-Maffliers station.
- Transilien - Line K, on the sections between Paris-Nord and Persan-Beaumont or Luzarches.
Take the Place de la Gare exit, on the side of platform 1. If you arrive on another platform, use the underpass.
No signposting
(S/E) Cross Place de la Gare and take Avenue Fernand Fourcade opposite, heading towards the gendarmerie and the post office. Keep going straight on, past the police station, up a gentle slope and past the post office. At the next junction, take thesecond left, the D64 towards Maffliers, and pass the market on your left. Pass the town hall, turn right then left onto the D64, go past the church on your right and arrive at a roundabout.
(1) Then follow the D24 to the right. Take thefirst left, Rue aux Loups. Stay on this street, which turns right then left.
Yellow markings
At the entrance to a hotel complex, continue straight on down a sunken lane. At the bottom, you’ll rejoin the tarmac; ignore a car park on the right and continue straight ahead onto Rue de la Ferme.
(2) At the roundabout, take thesecond right, Rue de la Forêt. At the end, turn left onto Rue Notre-Dame des Champs, and you will soon reach the church of the same name and the town hall-school. Turn right and walk past the church on your right.
No signposting
At the west end of the church, turn right into Rue du Four. At the junction, turn right and head towards the roundabout.
(2) Continue straight on the D64 towards L'Isle-Adam. It is best to use the pavement and then the right-hand verge for better visibility after the Maffliers exit ( narrow verge). Take thefirst left, a road leading to an equestrian centre.
(3) Immediately afterwards (sooner than the IGN map suggests), turn right onto a path blocked by a barrier of large tree trunks. At a fork in the road (not shown on the map), take the left-hand path. Cross several wet patches or go round them through the scrub, preferably on the left-hand side. After about 250 m, the path turns left (it does not continue straight ahead as shown on the IGN map).
(4) At the junction, turn right onto a wider, less damp path. At a fork in the road (not shown on the IGN map), veer left. Pass by the base of a solitary beech and oak tree and cross a path running perpendicular to you. Go round a low wall on the left and arrive at a crossroads (plot no. 53). Then take a wide path heading north-west, which starts behind a forest gate, and descend gently.
Yellow markings
At the junction (elevation 140), continue straight ahead and climb slightly. At the next junction, turn left onto a wide gravel path between plots nos. 51 and 49 (ignore the arrow of a secondPR®® sign directing you to the right). You will soon pass a fence on your left.
No markings
(5) At the information panel for the Tilleul des Bonshommes, leave the path to the right, cross a stream via a footbridge and follow a track, leaving the lime tree and a pond on your right. Continue uphill on a wider path. At the top, note some fine beech trees. At the junction (plot no. 48), go straight on and note a pond some distance away on the right. At the next junction, continue straight on (bridle path) and head downhill.
(6) At the junction, turn sharply left (south) and continue downhill. At the next junction, continue straight on. Cross a very open high forest, pass through a forest gate and emerge onto the D9 road.
(7) Cross the road (take care), pass a chicane (plot no. 62) and continue along a path that winds through the undergrowth. Pass the base of a tree bearing plot no. 61 and continue straight on (south-west). This leads to a crossroads (plots nos. 61, 62 and 64).
Yellow markings
(8) Turn left and, at the first Fork in the road, take the path on the right, which is the most obvious one. Cross a clearing and follow a ditch on your right, with fields beyond. Ignore all the paths on the left. Enter the woodland again. Cross the ditch where it turns left and follow the fence of a private property on your right.
No signposting
(9) At a junction, go straight on and ignore the arrow indicating a right turn (the IGN route is approximate here). Follow a grassy path north-north-east and ignore all the side tracks. Pass through a forest gate and cross the D9 road again (take care).
Yellow markings
(10) Pass through a metal gate and follow a tarmac lane which soon gives way to a wide gravel path. At the next junction, turn right between plots nos. 50 and 56. Head downhill, cross a stream and arrive at another junction.
(11) Follow thePR®®IA3to the right. After a short descent, turn left (wet section). Head up a path with a private property fence on the right-hand side. At a fork in the road, veer right, still following the fence. At the next junction, veer right again. Walk alongside an old ruined wall on your left, then pass under an old stone bridge. Go through a metal gate and continue along the tarmac.
(12) At the next junction, turn sharply left and follow a path that enters the forest (plot no. 88). Soon turn right and, at the Fork in the road that appears immediately, take the left-hand path into plot no. 88. At the next crossroads (elevation 173), take thefirst path on the right. Ignore a path branching off to the right (house) and continue eastwards.
Unmarked
(13) At a tree stump on the left-hand side, take a very faint path to the right (be careful to spot this start). Go downhill, go round a low wall on the right and come out onto a path (Sente de Derrière les Moulins on the map). Follow this path to the left, pass a bench and continue between two stone walls. Go under a footbridge and continue between the two walls. Go under a second footbridge.
(14) At the next junction, turn right between two fences and head downhill. Pass through a wooden gate and note a manor house on the left. At the bottom (note the former presbytery opposite), turn left onto Rue de Pontoise and walk past the entrance to the manor house. At the junction with Place des Tilleuls, turn left, still on Rue de Pontoise, to reach the roundabout opposite Montsoult church.
(1) Keep the church on your left and follow the D64 towards the station. At the roundabout at the corner of the market, take thesecond right, still on the D64 towards the station. Continue straight on until you reach Monsoult-Maffliers station (S/E).
To get back home:
- Transilien - Line K, towards Paris Nord, Persan-Beaumont or Luzarches.
Visorando Member
Difficult 
Easy 
Association / Club / Walk leader
