From Carnelle Forest to the Oise

The hike starts at Royaumont Abbey and takes you through a mainly rural area, dominated by forests and farms, with numerous horse breeding establishments. The hilly landscape offers beautiful views of the Carnelle forest and the Oise valley. Passing through several villages gives you a glimpse of their rich heritage.

Details

104668
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 20.34 km
  • ◔
    Average duration: 6h 15 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 163 m
  • ↘
    Descent: - 162 m

  • ▲
    Highest point: 123 m
  • ▼
    Lowest point: 24 m

Photos

Description of the walk

The starting point is the Royaumont Abbey car park.
You can get there by car or public transport (bus line 14 from Viarmes station).
.
(S/E) Leave the car park by turning left and, after about 50 metres, take the first path on the left marked with bothGR® (red and white) andPR® (yellow) signs. Follow this path to the entrance to Baillon, where it joins Rue des Marais.

(1) Turn right onto this street. When you reach the bridge over the canal, turn right to cross it and continue along Rue du Prieuré. At the second crossroads, turn left onto Rue du Château and, at the end of this street, turn right onto Rue Santiago Soulas. A few metres further on, turn left onto the path that runs alongside a large boundary wall.

(2) Follow this wall for about 1000 metres.

(3) At the corner of the wall, do not follow the marked path that turns left, but turn right to pass between forest plots 441 and 442.
At the Blue Cross post, continue straight on the Chaussée du Roi road until it joins a tarmac road, which you follow for about 200 metres before turning right onto a path where you will find aPR® (yellow) signpost

(4). The path passes close to a gas installation and runs alongside meadows to Moulin de Giez, where there is an equestrian centre.

(5) Turn left onto the road and follow the PR® markings. Just after a right-hand bend, take the path on the left and continue: there is a passageway under the D922 departmental road. The path leads to Rue de Giez in the village of Seugy. This street becomes Rue de la Fontaine a little further on (you will seeGR® markings), then continues along a path that crosses a bridge over a railway line.

(6) At the crossroads, turn right onto Chemin de Champlateau, which passes under the railway line and enters Viarmes.
At Chemin de la Justice, turn left and go uphill.

(7) You will pass in front of Viarmes station and then descend to a roundabout, which you cross to take the marked path that leads to Rue de Verdun, which in turn leads to Avenue Georges Clémenceau (D909Z).

(8) At No. 24, turn left into the pedestrian passageway that leads to Ruelle à l'Auge. Continue to Rue de Saint-Martin-du-Tertre, where you turn left. Walk along the school fence via Rue de la Fontaine d'Amour to the school car park.

(9) Turn left into the sunken lane that goes uphill. Cross the Rond de Chantilly.

(10) Descend the marked path to the Seigneurie crossroads. Follow Ruelle du Crocq. TheGR® andPR® markings turn left onto a small path between two properties, but do not follow them. Instead, continue straight ahead to the next crossroads, where you take Rue du Cat Rouge on your left and follow it to the Château de la Reine Blanche.

(11). Turn right onto Rue des Auges. At the next crossroads, you will find a pretty wash house with a fountain.

(12) Cross the crossroads and turn into Rue Delchet, then, at the end of this street, turn left onto Grande Rue and follow it until you reach Rue de la Gueule à Vaches, where you turn right.
As you approach the D922 road, turn left onto the marked path that runs alongside it.

(13) A little further on, pass under the D922 and continue to a roundabout.

(14) Turn right and cross a large cultivated area. The path approaches the Oise river.

(15). You will see water catchments dotted here and there. Continue to a reservoir.

(16) Turn right and then, 200 metres further on, turn left to join the D909 departmental road, at the corner of the Royaumont Abbey estate.

(17) Cross the D909 (there are no more markings from this point onwards) and walk along the boundary wall to the abbey car park (S/E).

.

Waypoints

  1. S/E : km 0 - alt. 31 m - Abbaye de Royaumont
  2. 1 : km 1.2 - alt. 29 m - Entrance to Baillon. Close to the old - Thève (rivière)
  3. 2 : km 1.72 - alt. 39 m - Baillon exit
  4. 3 : km 2.67 - alt. 43 m - End of the boundary wall
  5. 4 : km 4.59 - alt. 42 m - Bertinval Mill - Ysieux (rivière) - Affluent de la Thève
  6. 5 : km 6 - alt. 34 m - Giez Mill
  7. 6 : km 9.36 - alt. 122 m - Le Trou à Loup, turn right
  8. 7 : km 10.34 - alt. 122 m - Gare de Viarmes
  9. 8 : km 11.57 - alt. 67 m - Pedestrian crossing
  10. 9 : km 12.09 - alt. 72 m - Sunken lane
  11. 10 : km 12.64 - alt. 116 m - Rond de Chantilly
  12. 11 : km 13.46 - alt. 65 m - Château de la Reine Blanche
  13. 12 : km 13.71 - alt. 50 m - Wash house
  14. 13 : km 14.78 - alt. 28 m - Path on the left
  15. 14 : km 15.97 - alt. 27 m - Roundabout
  16. 15 : km 17.45 - alt. 24 m - Bord de l' - Oise (l')
  17. 16 : km 18.36 - alt. 27 m - Reservoir
  18. 17 : km 19.42 - alt. 30 m - Route D909
  19. S/E : km 20.34 - alt. 31 m - Royaumont Abbey

Notes

Good walking shoes are recommended as the ground can be very muddy and slippery in places.

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

4.4 / 5
Based on 22 reviews

Reliability of the description
4.6 / 5
Ease of following the route
4.7 / 5
Route interest
4 / 5
francoise SALLES 81
francoise SALLES 81

Overall rating : 5 / 5

Date of your route : Dec 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Great hike, only downside was a long muddy stretch towards the market gardeners at the end of the route.

Machine-translated

Tenrual
Tenrual

Overall rating : 3 / 5

Date of your route : Oct 05, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★☆☆☆☆ Very disappointing
Very busy route : Yes

The noisy roads are always very close by. Lots of houses with dogs. There are even dogs that can get out, including one that was rather aggressive. There was a lot of mud in the last part, which made crossing the fields very difficult.
To top it all off, I came across a mountain bike race (with hundreds of participants) while crossing the Carnelle forest, which also followed the same route as the hike.

Machine-translated

lolo.78
lolo.78
• Edited:

Overall rating : 4.3 / 5

Date of your route : May 25, 2020
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Some approximations in the description.
Point 4: Turn right (yellow markings) and walk alongside the gas installation towards the rural lodge, following the field. Continue, leaving the lodge on your left.
Point 7: Pass in front of the station (on your left), go down the street to the roundabout, the path is opposite and branches off to the right.
Point 8: When you reach the college, turn left and follow Rue de la Fontaine d'Amour for 150 metres. The path turns left.

Machine-translated

Françoise G9.
Françoise G9.

Overall rating : 4 / 5

Date of your route : Dec 30, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★☆☆ Average

Description between 6 and 7 a bit light.... At the end of the straight road, after leaving the village, turn left then right/right into the forest.... Lots of mud in the last part, crossing fields..... almost impassable and of no interest... but the rest of the hike is nice...

Machine-translated

Amastan
Amastan

Overall rating : 4.7 / 5

Date of your route : Jul 14, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good

Route not followed exactly (detour via the banks of the Oise)
Very interesting abbey
Crossing the Carnelle forest, which was peaceful but littered with rubbish.

Machine-translated

VincentLafon
VincentLafon

Overall rating : 5 / 5

Date of your route : Jun 30, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

Very pleasant hike with a wide variety of landscapes

Machine-translated

jmpourcher
jmpourcher

Overall rating : 4 / 5

Date of your route : Jun 16, 2019
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good

Please note that the Abbaye de Royaumont car park is private, so it is best to start the walk in a nearby village, such as Viarmes or Seugy.
There is a lot of litter at the trailheads. The area across the fields before the abbey is not very interesting.

Machine-translated

flaulin
flaulin

Overall rating : 3.7 / 5

Date of your route : Mar 02, 2019
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★☆☆☆☆ Very disappointing

There are a few pleasant short stretches, but overall the route is uninteresting.
There are constant aeroplanes, and noisy roads are always nearby. There are constantly well-kept suburban houses, sometimes with dogs. Some dogs are allowed to roam free, including one that was aggressive. There is rubbish, fly-tipping and traces of toilet paper everywhere. There are flat fields of crops with huge electricity pylons.

Machine-translated

lumaitre
lumaitre

Overall rating : 4.7 / 5

Date of your route : May 06, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

Hello,
A beautiful hike that alternates between forest, fields and small villages. The section between Asnières-sur-Oise and Royaumont Abbey is the least interesting part (noisy roads and monotonous fields), but it's no big deal, and skipping this section by going directly from Viarmes to Royaumont means missing out on the charming little town centre of Asnières-sur-Oise.
We did the route from Viarmes station to Seugy station.
Thank you!

Machine-translated

arppq
arppq

Overall rating : 5 / 5

Date of your route : Apr 21, 2018
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good

a very varied route alternating between pretty villages and beautiful landscapes, heritage sites, countryside and woods.
the directions were very reliable, except perhaps between points 6 and 7
ARPPQ

Machine-translated

xpenet@wanadoo.fr
xpenet@wanadoo.fr

I haven't yet done the hike I'm planning to do in April.
I regret that we don't have a map of the hike... I had to follow it on Google Earth. I'm thinking of buying the IGN map if I like the hike, but IGN deliberately doesn't allow you to view the maps without purchasing them!!!!

Machine-translated

marchopas
marchopas

Overall rating : 4.7 / 5

Date of your route : Dec 03, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

caution: very muddy terrain from point 12 onwards

Machine-translated

jpb93
jpb93

Overall rating : 4.7 / 5

Date of your route : Nov 05, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

I walked this route starting from Viarmes station. In my opinion, the section between the station and Royaumont Abbey is rather uninteresting (forest paths that are not very clean, proximity to noisy roads, crossing large monotonous fields). I think it's better to go directly to the abbey via the centre of Viarmes and allow time for a visit (one hour, admission €8). Since we have shortened the route, we can extend it beyond point 3 by following the Nouvelle Thève, a winding river that runs through the forest; this detour is very beautiful. With this addition, the total distance is 17 km.

Machine-translated

Beauviche
Beauviche

Overall rating : 4.7 / 5

Date of your route : Sep 04, 2017
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

It is important to take the time to read and follow the instructions on the information sheet

Machine-translated

bernard951
bernard951

Overall rating : 4.7 / 5

Date of your route : Oct 13, 2016
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good

Beautiful trees. Abbey car park very convenient during visiting hours. Pay attention to the signposts in Seugy. Easy, well-prepared walk.

Machine-translated

Other walks in the area

For more walks, use our search engine .

The GPS track and description are the property of this route's author. Please do not copy them without permission.