Discovering the Sonian Forest (large)

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31.8 km
287 m
02h07
Hard

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Route information

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Last verified: 10 July 2025
Translated by OpenAI

Description by the author


For the 'Day of the Sonian Forest' on Sunday 16.10.2022, Visit.brussels developed a series of cycling routes that introduce you to the diversity of this exceptional beech forest.

This larger loop of over 31 km takes you from the entrance gate at the Red Cloister through the Vuurkeiendomein, the Middenhut, and finally back to the starting point via the Arboretum of Tervuren.

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Route origin

Route description

Region

Statistics

Difficulty level: Hard (80/100)

Length: 31.8 km

Duration: 02h07


Total ascent: 287 m

Maximal slope: 11.4 %

Average slope: 0.9 %

Net ascent: 2 m

Total descent: 285 m

Roads and subsoil

Paved roads: 17.1 km (54 %)

Cobblestones: 786 m (2 %)

Bike paths: 22.9 km (72 %)

Scenery

Car free roads: 18.5 km (58 %)

Noise pollution

Amount of traffic


Natural area

Urban area

Water rich area

Characteristics

  1. Bike friendly
  2. Light traffic
  3. Loop-shaped
  4. Public transport accessible

Themes

    Groups

    1. Fietsen & MTB Selectie Zoniën
    2. Het Zoniënwoud ontdekken met Visit.brussels

    Start and end of the route

    Closest address to start and end: Rood Kloosterstraat 8, 1160 Oudergem, België

    Navigate to starting point

    Places of interest

    1. Old railway line

      0 · Path

      Formerly a railway line linking Brussels to Tervueren, the route has now been converted into a …

      visit.brussels
    2. Mercury

      0 · Monument

      This monument represents Merciurius. It has a place in front of the Cultural Center. The sun …

      Pascal Brackman
    3. Herrmann-Debroux stop

      0 · Metrostation

      Herrmann-Debroux station is the terminus of Metro line 5 (Erasme - Herrmann-Debroux). Two accesses …

      Sonian Forest
    4. Senypark

      0 · Park

      This small park owes its name to Albert Seny, who owned a water mill dating back to the 13th …

      visit.brussels
    5. Le Floréal

      0 · Neighborhood

      Le Floréal

      visit.brussels
    6. Tenreuken Park

      0 · Park

      This small, peaceful park was created in the early 20th century as part of the construction of …

      visit.brussels
    7. Woluwe Valley

      0 · Valley

      We are on the banks of a beautiful river in the region, the Woluwe. Like the Senne and the …

      visit.brussels
    8. Le Logis

      0 · Neighborhood

      Le Logis

      visit.brussels
    9. AXA building

      0 · Building

      The impressive building on your right is the former headquarters of AXA, a major insurance …

      visit.brussels
    10. Leybeek Ponds

      0 · Pond

      The Leybeek Ponds are former fish ponds in the park of the same name, which were created to mark …

      visit.brussels
    11. Boitsfort Station

      0 · Trainstation

      Boitsfort station (Dutch: Station Bosvoorde) is a Belgian train station in Watermael-Boitsfort in …

      Sonian Forest
    12. Tournay-Solvay Park

      0 · Park

      Leaving the forest, let’s find out more about an illustrious Belgian family at the Tournay-Solvay …

      visit.brussels
    13. 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
    14. Sources of the Hermit Pond

      0 · Source

      More than 100 sources in Brussels !

      Coördinatie Zenne-Coordination Senne
    15. Drowned Children's Source

      1 · Source

      More than 100 springs in Brussels !

      Coördinatie Zenne-Coordination Senne
    16. 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
    17. United Nations Decade on Ecosystem Restoration

      1 · Natural area

      Ecosystems are the basis of life on Earth. Forests, Grasslands, Peatlands, Urban areas, Mountains …

      United Nations Brussels
    18. 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
    19. Forests and how they can help address climate change, biodiversity loss and pollution

      0 · Natural area

      Forests cover nearly one-third of the Earth’s land surface and contain the majority of terrestrial …

      United Nations Brussels
    20. Forest cows

      0 · Natural phenomena
      Within the inner lane of the former hypodrome, a few Scottish Highland cows are used to keep the …
      Dromos
    21. 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
    22. Forêt de Soignes

      0 · Forest

      Did you know that James Ensor and Guillaume (Willem) Vogels were active here in the Sonian Forest? …

      Pascal Brackman
    23. 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
    24. Monument to the Foresters

      0 · Monument

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

      RouteYou
    25. Forest reserve Zwaenepoel

      0 · Natural area

      The Austrian Joachim Zinner was at the cradle of the current look of the Sonian Forest. In the …

      Pascal Brackman
    26. Royal Country Riding Club

      0 · Eat & Drink

      The Club House is an essential meeting point in the life of the stables of the Royal Country …

      Sonian Forest
    27. Onze-Lieve-Vrouwkerk

      0 · Church
        In the Sonian Wood, there stood a peculiar and frightening oak tree. It was called the “Devil’s …
      Wizpr.guide
    28. Jezus-eik

      0 · Village

      The village of Jezus-Eik was built in the middle of the forest as a place of pilgrimage. Today, …

      Sonian Forest
    29. Tervuren Arboretum

      0 · Arboretum

      Between the access gates of the Tervuren Park and Jezus-Eik is the famous Arboretum of Tervuren, a …

      Sonian Forest
    30. Rood-Klooster

      0 · Abbey

      Did you know that Flemish Master Hugo van der Goes suffered from severe depression at the end of …

      Dromos

    Comments

    Activities

    Nearby

    Routes nearby

    Lodging nearby

    Services nearby

    Old railway line
    Mercury
    Herrmann-Debroux stop
    Senypark
    Le Floréal
    Tenreuken Park
    Woluwe Valley
    Le Logis
    AXA building
    Leybeek Ponds
    Boitsfort Station
    Tournay-Solvay Park
    Tournay-Solvay Park and its castle
    Sources of the Hermit Pond
    Drowned Children's Source
    The Karregatbeek
    United Nations Decade on Ecosystem Restoration
    Tumulisite
    Forests and how they can help address climate change, biodiversity loss and pollution
    Forest cows
    Groenendael Priory
    Forêt de Soignes
    Foresters’ Memorial
    Monument to the Foresters
    Forest reserve Zwaenepoel
    Royal Country Riding Club
    Onze-Lieve-Vrouwkerk
    Jezus-eik
    Tervuren Arboretum
    Rood-Klooster
    0 km1 km2 km3 km4 km5 km6 km7 km8 km9 km10 km11 km12 km13 km14 km15 km16 km17 km18 km19 km20 km21 km22 km23 km24 km25 km26 km27 km28 km29 km30 km31 km32 km56 m149 m
    PLUS
    500 m

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