Sonian Forest: Hiking and sightseeing in cadence (14.5km)

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14.5 km
152 m
02h54
Medium

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Route information

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Last verified: 10 April 2025
Azure

Description by the author

Hiking/track through much of the Sonian Forest 14.5km
The best historical sites of this forest are included in this loop.
If 14.5 km of walking is not feasible for your children, then it can be an educational and relaxing trip in the forest of which only 2 "to see" are not made: https://www.routeyou.com/nl-be/route/view/4641810/wandelroute/zonienwoud-wandelen-korte-lus-en-bezoeken-in-lichte-kadans-8-8km

Starting point: Groenendaal railway station (also a large car park)

What will you see/feel:
1.La Sonian Forest has plenty of treasure trove of trails under the trees, away from the busy streets/highways it crosses.
2. Groenendaal domain where you go at the beginning and end. At first, a subsection was taken under the RO (eastern ring around Brussels) and the Ganzepootvijvers.
3. We pass the South Arboretum first.
4. Via the Koninginnepad, we go to the Boswachtersmonument.
5. Just cross the bustling Harasdreef, after which the somewhat long path goes to the two Roman tumuli.
6. Via the Tumuliweg (we retrace our steps for a while), we NO LONGER cross the railway at a special place (waiting for the train!!!)?. DON'T GO ANY FURTHER ALONG THE ECO BRIDGE (it's for animals): FORESTER FEEDBACK!!!. The only option here seems to be to cross the railway line via the Van Kerm-dreef to the N275 Terhuplsesteenweg (CROWD: BEWARE THERE!!!!). Then, on the east side, through the end of the arboretum, and at the end we pass the Jan-Van-Ruusbroec-Bosmuseum.
7.Via the special bridge for pedestrians and cyclists, we cross the RO to return to our starting point. We then drove 14.4 km.

Simple and good.

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Route origin

Route description

Region

Statistics

Difficulty level: Medium (73/100)

Length: 14.5 km

Duration: 02h54


Total ascent: 152 m

Maximal slope: 2.92 %

Average slope: 1.45 %

Net ascent: 1 m

Total descent: 151 m

Difficulty level according to the author: 3/10

Roads and subsoil

Paved roads: 6.22 km (43 %)

Cobblestones: 0 m (0 %)

Scenery

Car free roads: 11 km (76 %)

Noise pollution

Amount of traffic


Natural area

Urban area

Water rich area

Characteristics

  1. Adventurous
  2. Athletic
  3. Autumn recommended
  4. Bike friendly
  5. Car free
  6. Child friendly
  7. Did you know...
  8. Light traffic
  9. Loop-shaped
  10. Not signposted
  11. Public transport accessible
  12. Spring recommended
  13. Summer recommended
  14. Unpaved (> 10%)
  15. Winter recommended

Themes

  1. Culture
  2. Forest
  3. Geography
  4. History
  5. Nature
  6. Philosophy
  7. Religion
  8. Top things to do
  9. Water (sea, lakes, rivers)

Groups

  1. Canon van België
  2. Zoniënwoud

Start and end of the route

Closest address to start: Station Groenendaal, Groenendaalsesteenweg, 1560 Hoeilaart, België / Belgique / Belgien
Closest address to end: Groenendaal, Ildefonse Vandammestraat, 1560 Hoeilaart, België / Belgique / Belgien

Navigate to starting point

Places of interest

  1. Groenendaal

    0 · Trainstation

    By starting your visit of the forest through the Groenendael access gate, you will be immersed in …

    Sonian Forest
  2. Groenendael Fietsenstalling f1

    0 · Bicycle shelter
    Type: Public Bicycle Parking Owner: NMBS Administrator: B-Parking (NMBS)
    Velopark.be
  3. Groenendael Priory

    0 · Historical building

    In the heart of the Sonian Forest don’t miss the Groenendael Priory at node 43 (about 500 m), …

    visit.brussels
  4. Castle of Groenendaal

    0 · Castle
    To the west of the church is groenendaal castle. It was built in the second half of the 18th …
    Blauwkruikje
  5. Parking Priory (50)

    0 · Parking

    This large car park, located between the Castle of Groenendael and the remains of the priory, …

    Sonian Forest
  6. Old Vanderheydenbaan racecourse

    0 · Hippodrome
    At the end of the 19th century, groenendaal's racecourse was built on a clearing where crops were …
    Dromos
  7. Arboretum Groenendaal

    0 · Arboretum
    Along the Arboretumweg, the Arboretum Groenendaal founded in 1897. In the Arboretum of Groenendaal …
    Blauwkruikje
  8. St. Kornelius Chapel

    0 · Chapel

    The St. Kornelius Chapel is also used in the comics of Marc Sleen as you can see for yourself in …

    Dromos
  9. Sonian Forest

    0 · Forest

    The Brussels painter René Stevens founded the oldest nature association in Belgium, linked to the …

    Pascal Brackman
  10. Sonian Forest

    0 · Forest

    Napoleon had thousands of trees cut in the Sonian Forest for his fleet to carry out his invasion …

    Pascal Brackman
  11. Monument to the Foresters

    0 · Monument

    As a basic material, artist Viandier used a natural stone from the Ardennes, the Wéris pudding …

    RouteYou
  12. Foresters’ Memorial

    0 · Monument

    Just a stone’s throw from our route (about 200 m) you will find a very unusual mausoleum. It is …

    visit.brussels
  13. Memorial to the Brussels attacks

    1 · Monument

    The memorial to the Brussels attacks in the Sonian Forest was built in response to the Brussels …

    Dromos
  14. Tumulisite

    1 · Historical place

    Here we reach the ‘real’ ridge lines on our route, reaching an altitude of 130 m, the true summit …

    visit.brussels
  15. Tournay-Solvay Park and its castle

    0 · Park

    The Tournay-Solvay park bears the name of its former owners. This pretty estate with its …

    Sonian Forest
  16. Source of the Drowned Children

    1 · Source

    The source of the Drowned Children, which takes its name from the valley in which it is located …

    Coördinatie Zenne-Coordination Senne
  17. Fagus - planted in 1806 - Bonnier II

    1 · Tree
    • genus: Fagus • height: 15 meter • circumference : 3,46 meter
    Sonian Forest
  18. Enfants Noyés Nature Reserve

    0 · Lake
    The Enfants Noyés Nature Reserve is a nature reserve consisting of three large ponds located in a …
    Wikipedia
  19. The Karregatbeek

    1 · River

    Here we find the Karregatbeek flowing in a forest at the bottom of a humid valley, after crossing …

    Coördinatie Zenne-Coordination Senne
  20. The Vuilbeek

    1 · River

    The Vuilbeek flows for a large part through the Sonian Forest but has a somewhat confusing name. …

    Coördinatie Zenne-Coordination Senne
  21. Vuylbeek

    0 · River

    The name of the river Vuylbeek ('Dirty brook'), which flows largely through the Sonian Forest, is …

    Sonian Forest
  22. Parking ISB (6)

    1 · Parking

    A very small car park, with only six spaces for cars, allowing access to the forest via the Drève …

    Sonian Forest
  23. Sources of the Hermit Pond

    0 · Source

    More than 100 sources in Brussels !

    Coördinatie Zenne-Coordination Senne
  24. Pond and springs in Tournay-Solvay Park

    1 · Source

    Along the pond that adorns the Tournay-Solvay Park, on the same side and just a few meters apart, …

    Coördinatie Zenne-Coordination Senne
  25. The forest station (disappeared)

    0 · Historical building

    Here once stood the old railway stop of the Sonian Forest on line 161 Brussels-Namur. At the start …

    Sonian Forest
  26. B&B Hippo-Droom

    0 · B&B
    tvl
  27. Parking Bosmuseum (30)

    0 · Parking

    This car park located at the beginning of the Drève des Tumuli has around thirty spaces for cars. …

    Sonian Forest
  28. The Jan van Ruusbroec Forest Museum

    0 · Museum
    In the heart of the Sonian Forest, near the motorway and groenendaal station, lies the Forest …
    Blauwkruikje
  29. Arboretum of Groenendaal

    0 · Arboretum

    If you find a completely different type of trees and shrubs here, it is thanks to Leopold II. In …

    RouteYou
  30. Forest Museum Jan van Ruusbroec

    0 · Museum

    The Jan van Ruusbroec Forest Museum (Bosmuseum Jan van Ruusbroec) is located in the heart of the …

    Sonian Forest

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Activities

Nearby

Routes nearby

Lodging nearby

Services nearby

Groenendaal
Groenendael Fietsenstalling f1
Groenendael Priory
Castle of Groenendaal
Parking Priory (50)
Old Vanderheydenbaan racecourse
Arboretum Groenendaal
St. Kornelius Chapel
Sonian Forest
Sonian Forest
Monument to the Foresters
Foresters’ Memorial
Memorial to the Brussels attacks
Tumulisite
Tournay-Solvay Park and its castle
Source of the Drowned Children
Fagus - planted in 1806 - Bonnier II
Enfants Noyés Nature Reserve
The Karregatbeek
The Vuilbeek
Vuylbeek
Parking ISB (6)
Sources of the Hermit Pond
Pond and springs in Tournay-Solvay Park
The forest station (disappeared)
B&B Hippo-Droom
Parking Bosmuseum (30)
The Jan van Ruusbroec Forest Museum
Arboretum of Groenendaal
Forest Museum Jan van Ruusbroec
0 km1 km1 km2 km2 km3 km3 km4 km4 km5 km5 km6 km6 km7 km7 km8 km8 km9 km9 km10 km10 km11 km11 km12 km12 km13 km13 km14 km14 km15 km15 km93 m137 m
PLUS
200 m

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