The Sonian Forest

Discover the Sonian Forest, south of Brussels, by exploring its paths and avenues.

Details

3073313
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 11.21 km
  • ◔
    Average duration: 3h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 121 m
  • ↘
    Descent: - 115 m

  • ▲
    Highest point: 143 m
  • ▼
    Lowest point: 64 m

Photos

Description of the walk

Parking near the Town Hall of Watermael-Boistfort. Please note the regulated parking areas: blue zones.
The location is also easily accessible by public transport (tram, bus, train).
Alternative for cars: there is a free forest car park at the start of the forest: Drève de la Louve 1, 1170 Watermael-Boitsfort. As the route is circular, you can easily return to your vehicle, see (12).

(S/E) From in front of the Town Hall, head towards the tram lines and Avenue Delleur. Cross the avenue at the traffic lights, near Rue Middelbourg. Walk a few metres to the right towards the entrance to Jagersveldpark.

(1) Enter the park and walk through it, staying on the paths on the left to reach the Fontaine des Oiseaux (Bird Fountain, designed by Folon) at the intersection of Chaussée de la Hulpe and Avenue Alfred Solvay.
Note: see also the comment associated with the photo.
Then turn left towards Chemin des Silex (named after the Neolithic artefacts found in the surrounding area). At the end of the path, enter Tournay-Solvay Park.

(2) Turn left between two ponds. After climbing the slight slope, enter the vegetable garden maintained by local residents.

(3) At the exit, turn right and go under the railway bridge. 50 metres further on, take the path on the left: Sentier du Vuylbeek and follow theGR® trail. Arrive at the crossroads of the Vuylbeek pond

(4) Cross the asphalt road and continue along the path, following the stream on your right. You will arrive at the crossroads with multiple paths in the Sonian Forest.

(5) Cross the asphalt road and continue along the path on the right, which continues to follow the stream until you reach the Y-junction.

(6) Leave theGR® and continue on the left along the Sentier des Bouleaux, which climbs slightly.

(7) When you reach the junction of Drève de Saint-Hubert and Chemin du Pivert, cross the lane and continue along the path, which heads south and joins a large crossroads.

(8) At the crossroads, just before Avenue Dubois, take Drève des Bonniers on the left. Ignore the side paths and continue straight ahead on Drève des Bonniers. 300 metres after the junction with Vieressendreef, you will arrive a few metres before the crossroads with Drêve des Tumuli.

(9) Depending on the condition of the ground (moisture), you have two options: either take the path on your right (option shown on the map) or continue along Drêve des Bonniers. In any case, the two paths meet to pass under the railway line.

Then continue to the N275 national road and cross it (take care). About 150 m further on, turn left onto the Drève du Relais (the Sentier du Vallon des Chênes can only be used in dry weather). Ignore the first crossroads (path reserved for horse riders) and continue to a crossroads with several paths and tracks.

(10) Take the Sentier du Vallon des Chênes and follow it to reach the Drève aux Loups. Along this path, note the Libert oak tree on your right (35 m high and 3.50 m in circumference), dedicated to the forestry engineer Libert.

After the Drêve de Bonne Odeur crossroads, you will arrive at the Drêve des Mésanges.
Take it on the left and follow it straight ahead to the left until you reach a bridge over a ditch before a large crossroads.
Alternative: in dry weather, you can continue along the Sentier du Vallon des Chênes to reach (11).

(11) Continue left on the Sentier du Vallon des Chênes to reach the Drève du Tambour, which you also follow to the left. Return to the Forêt de Soigne car park (alternative if you arrived by car).

(12) Continue straight ahead. Reach Boulevard du Souverain via Rue Nisard, follow it to the left, go around the roundabout on the left and then reach the Town Hall of the municipality of Watermael-Boistfort (S/E).

Waypoints

  1. S/E : km 0 - alt. 67 m - Town hall of the municipality of Watermael-Boistf
  2. 1 : km 0.12 - alt. 70 m - Entrance to Tournay-Solvay Park
  3. 2 : km 1.13 - alt. 80 m - Ponds
  4. 3 : km 1.42 - alt. 87 m - Exit from the vegetable garden
  5. 4 : km 2.38 - alt. 98 m - Vuylbeeck pond crossroads
  6. 5 : km 2.8 - alt. 112 m - Crossroads in the Sonian Forest
  7. 6 : km 3.08 - alt. 123 m - Y-junction
  8. 7 : km 3.37 - alt. 142 m - Carrefour Saint-Hubert
  9. 8 : km 4.15 - alt. 114 m - Carrefour Avenue Dubois
  10. 9 : km 5.43 - alt. 123 m - Crossroads of the Drêve des Tumuli
  11. 10 : km 6.79 - alt. 139 m - Multiple crossroads
  12. 11 : km 8.36 - alt. 120 m - Bridge
  13. 12 : km 10.54 - alt. 89 m - Parking at the Forêt de Soigne
  14. S/E : km 11.21 - alt. 67 m - Town Hall

Notes

(8) If you have time (15 minutes), take a detour across the road (take care) to visit the Mémorial aux Forestiers (information available on site).

(S/E) When you arrive, feel free to grab a bite to eat in one of the many restaurants/brasseries in the area.

Surroundings: shops and restaurants around Place Léopold Wiener (starting point).

Please note: in wet weather (rainfall in the previous days), some paths are difficult, but the tree-lined avenues remain an alternative, allowing you to complete a circular route in all weathers.

Worth a visit

- Tournay-Solvay Park.
- Fontaine des Oiseaux (Michel Folon).
- Foresters' Memorial.
- Libert Oak.

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

4.3 / 5
Based on 10 reviews

Reliability of the description
4.1 / 5
Ease of following the route
4.6 / 5
Route interest
4.3 / 5
catbalou
catbalou

Overall rating : 4.7 / 5

Date of your route : Jun 14, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Hiking in the forest, but on paved trails, which are very popular with cyclists who sometimes ride very fast. Personally, I didn't like being on tarmac in the forest, but it's still a pleasant walk. If you like that kind of thing, then go for it.

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Layron
Layron

Overall rating : 4.7 / 5

Date of your route : Apr 08, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hello!
Great hike
I just want to point out that at point 9, the option shown on the map (take the path on the right) is now reserved for horse riders. You must therefore continue straight ahead as mentioned in the description.

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Lepei
Lepei
rAoule66
rAoule66

Great 🤩 I'm delighted ☺️

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Lepei
Lepei
• Edited:

Thank you, I'll be back with another one that follows three streams... I'll put the link to the file here.

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rAoule66
rAoule66

Overall rating : 5 / 5

Date of your route : Nov 10, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A wonderful walk with my eldest daughter.
I know the Soignes Forest very well and have explored it extensively since childhood, yet I was pleasantly surprised to discover trails I didn't know existed.
What a joy, and the day was magnificent 🤩
I would love to do it again 😊

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Avijack
Avijack

Overall rating : 4.5 / 5

Date of your route : Aug 05, 2024
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A lovely spot for long walks in the shade.

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Rallo Myz
Rallo Myz

Overall rating : 3.7 / 5

Date of your route : Jul 13, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

Nice, just a few minor inaccuracies at times. I made a mistake two or three times but quickly realised thanks to the map.

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Lepei
Lepei

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ArinaTomberg
ArinaTomberg

Overall rating : 4.7 / 5

Date of your route : Nov 03, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

I am familiar with the Sonian Forest and I must say that the chosen route is truly magnificent. It is a great pity that over the years the little stream along the Vuylbeek trail has disappeared, but the trail remains very pretty.

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Lepei
Lepei

Thank you

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randonnéesgodasse
randonnéesgodasse

Overall rating : 5 / 5

Date of your route : Sep 12, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

We are very pleased to be able to discover and choose from the various hikes you offer on your website, and we are always pleasantly surprised to be able to use what you offer us!
Thank you
Mr Galante (star) :

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Lepei
Lepei

Tarmac sections: correct. I'll work on that (;-))

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anne.jussiaux
anne.jussiaux

Overall rating : 4.7 / 5

Date of your route : Jan 10, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful, pleasant hike with an easy-to-follow route. It might be useful to plan alternatives to the paved sections.

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Lepei
Lepei

Thank you (anyway) for this comment.
Unfortunately, the fountain is somewhat hidden among the trees.
I will make corrections to make access clearer.
And I suppose the available trail didn't help you either.

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