West of the Isle-Adam Forest and overlooking the Marais de Stors

You will walk along both wide, straight paths designed by Le Nôtre, with star-shaped crossroads, and small paths that wind along the edge of the forest, with sections overlooking the Marais de Stors Nature Reserve and the large Abbaye du Val Park.

Details

17169271
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 10.39 km
  • ◔
    Average duration: 3h 10 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 69 m
  • ↘
    Descent: - 64 m

  • ▲
    Highest point: 119 m
  • ▼
    Lowest point: 56 m

Description of the walk

At the Carrefour du Pavillon de Paris crossroads on the D 64, park in the car park on the right when coming from L'Isle-Adam.

(S/E) From this car park, go to the Carrefour du Pavillon de Paris and, with your back to it, take the Route Marron, the grassy path furthest to the right between plots 17 and 18. Continue straight ahead at the junction with a secondary path. Then turn right at the Carrefour du Daim to take the Route du Hangar. Cross the Petite Route du Lary and continue to the Grille des Bons Hommes.

(1) Facing the Route des Bonshommes towards the forest, take the path on the far right at the edge of the forest (PR®1, yellow markings). Pass the first path on the left and cross a road. Take a circular path around a mushroom farm (visible on the right by its ventilation chimney), then cross Route de la Cure to Route du Vollard.

(2) Take this road on your left, pass a path on the left and continue straight ahead until you reach a crossroads.

(3) Cross Route de Stors and continue straight ahead (south-southwest) on theGR®1(red and white markings). Ignore two perpendicular paths and continue to the forest edge path overlooking Coteau de l'Étang.

(4) Follow this path to the left, still on theGR®1, and wind your way along the edge of a marshy area. Take this marked path rather than the parallel paths below, with the remains of stone walls on your right, then a wooden guardrail. Pass some old stone quarries, with beautiful views overlooking the Marais du Stors Nature Reserve, then turn right onto Route Capitaine, lined with a high wall on your right featuring a large metal gate known as the "Porte Noire".

(5) With your back to this gate, take the path on the far left, then immediately turn left onto Route Neuve, between plots 79 and 81. Cross a path and turn right at the next crossroads. Cross a footpath and continue straight ahead between plots 77 and 78 until you reach Carrefour Vicaire.

(6) Take the second path on the right (GR®1) and continue straight ahead to Carrefour du Chêne au Loup, between plots 75 and 76.

(7) Turn left at an acute angle onto Route du Conti (leaving theGR®1). At the next crossroads (Carrefour Lorentz), take the first path on the right, Route du Sarcelet, between plots 73 and 74. Continue straight ahead until you reach Carrefour du Tremble, located just before the bridge over the N184.

(8) Take the second path on the left and, at the fork immediately ahead, turn right to stay on the edge of the forest, parallel to the N184. Cross a path and continue along the road. After about 200 m, turn left. At the end of the road, turn left again onto Route Boby, between plots 29 and 33.

(9) At the crossroads, turn right onto Route des Pavillons, between plots 27 and 29. At the next crossroads, turn left and then immediately right. Return to Route Conti, between plots 18 and 28, and follow it to the right until you reach the starting point (S/E).

Waypoints

  1. S/E : km 0 - alt. 82 m - Carrefour du Pavillon de Paris
  2. 1 : km 1.08 - alt. 79 m - Grille des Bons Hommes
  3. 2 : km 2.08 - alt. 69 m - Route du Vollard
  4. 3 : km 2.81 - alt. 63 m - Crossroads
  5. 4 : km 3.46 - alt. 63 m - Hillock by the pond
  6. 5 : km 5.2 - alt. 73 m - Porte Noire - Ancienne Abbaye du Val (Mériel)
  7. 6 : km 6.4 - alt. 105 m - Carrefour Vicaire
  8. 7 : km 6.98 - alt. 110 m - Carrefour du Chêne au Loup
  9. 8 : km 8.07 - alt. 116 m - Carrefour du Tremble
  10. 9 : km 9.38 - alt. 107 m - Route des Pavillons
  11. S/E : km 10.39 - alt. 82 m - Carrefour du Pavillon de Paris

Notes

Water point and shelter at the Pony Club located near (1).
Paths with gentle slopes.

Worth a visit

 Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.6 / 5
Based on 14 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.4 / 5
Route interest
4.5 / 5
Walker2
Walker2

Overall rating : 4.3 / 5

Date of your route : Nov 10, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

Lovely walk in the Isle Adam forest, the paths are in very good condition.

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Lucilecam
Lucilecam

Overall rating : 4.7 / 5

Date of your route : Mar 24, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant walk in the heart of the forest.
However, the section along the N184 is a major drawback: exhaust fumes, infernal noise...
It's a shame because the forest is large enough to avoid this section, which is very busy with traffic.

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Sevillana
Sevillana

Overall rating : 5 / 5

Date of your route : Jul 13, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very pleasant, easy route. We even came across a deer and her two fawns.

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COUDERT Isabelle
COUDERT Isabelle
• Edited:

Overall rating : 4.7 / 5

Date of your route : Apr 08, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

An easy and pleasant route through the forest; particularly enjoyable in April when the undergrowth is covered with violets and lilies of the valley.
The only slight downside is a section of the route that runs alongside the RN 184 between points 8 and 9, which is very noisy.
Otherwise, it's peaceful and easy.

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coco93
coco93

Overall rating : 3.7 / 5

Date of your route : Aug 16, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

barely visible marsh

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Rose7514
Rose7514

Overall rating : 5 / 5

Date of your route : Aug 10, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hello, We only use public transport and we did this hike from Mériel station (Gare du Nord line H). To do this, we took the path towards the Stors marsh and it is possible to join the route either at point 4 or point 5. The Stors Marsh is a protected area (full of articles) and by zooming in on the map in the attached article, it is possible to reach it https://www.reserves-naturelles.org/mara... Or you can use Google Maps. The entrance to the reserve is signposted. We chose to take a path parallel to the route in the reserve. To avoid making the hike too long, we cut across like others, avoiding the part that runs along the N 184. The forest is well marked.

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clamed95
clamed95

Overall rating : 5 / 5

Date of your route : Jul 22, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Superb hike, easy, in the shade. A few sections on sandy bridle paths, but quite short and therefore not difficult. We cut across before reaching the motorway to avoid the noise of the cars. The GPS is a great help here.
Definitely worth doing again and again.

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lecomaje
lecomaje

Overall rating : 4.3 / 5

Date of your route : May 28, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant walk in the forest under today's sunshine, very easy (almost no elevation gain, wide paths). Not very busy on this Pentecost Sunday. However, it lacks a little variety.
The description is clear, but a little geolocation can be useful at certain junctions.
two suggestions:
- Unlike the author, when you reach the Stort Marshes, I recommend leaving the GR1 path and taking the trail below. This gives you a better view of the marshes and, above all, the limestone cliffs of Stors.
- Between 8 and 9, you can shorten the route and take the shortest path without following the N184. The section that runs alongside this busy road is of little interest and is, of course, very noisy.

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Hélène Huet
Hélène Huet

Overall rating : 4 / 5

Date of your route : Feb 20, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

A very pleasant walk through forest and glades. It's not always easy to find your way, and other hikers aren't much help!
In my opinion, you need a fairly good sense of direction :-)

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charlieduf
charlieduf

Overall rating : 4.7 / 5

Date of your route : Dec 05, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Nice walk, a bit too noisy when it passes close to the motorway.

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joelle C&R
joelle C&R

Overall rating : 5 / 5

Date of your route : Jul 10, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

an easy and very pleasant route through the forest (which was ideal given the heat). A bit too many bicycles on the route, which don't necessarily signal their presence.

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pcarnicelli
pcarnicelli

Overall rating : 4.7 / 5

Date of your route : Jul 10, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Unfortunately, there were lots of walkers with their dogs off the leash. I go dog hiking with my dog on a flexible lead... sometimes I had to protect my dog...
The section of the GR1 that is closed to cyclists and horse riders is really narrow, and some very aggressive cyclists were coming in the other direction... It spoiled the atmosphere.
In conclusion, it's a beautiful route, but one to avoid on Sundays if you want to enjoy nature in peace and quiet.

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Gervais
Gervais

Overall rating : 5 / 5

Date of your route : Jan 02, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very well documented, varied and very enjoyable route

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