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Routes
Road cycling routes
Belgium
Flanders
Flemish Brabant
Halle-Vilvoorde
Hoeilaart

Boitsfort Ponds – The Sonian Forest loop from Groenendaal

Routes
Road cycling routes
Belgium
Flanders
Flemish Brabant
Halle-Vilvoorde
Hoeilaart

Boitsfort Ponds – The Sonian Forest loop from Groenendaal

Easy

4.7

(3)

25

riders

Boitsfort Ponds – The Sonian Forest loop from Groenendaal

00:53

18.0km

220m

Road cycling

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: June 27, 2026

Tips

Includes segments that go up or down a series of steps

You may need to carry your bike.

After 39 m for 18 m

After 17.9 km for 18 m

Waypoints

A

Start point

Train Station

Get Directions

2.57 km

Sonian Forest - Grippensdelle A

Nature Reserve

2

4.22 km

Boitsfort Ponds

Highlight • Lake

While you're there, don't miss Tournay-Solvay Park, just beyond the ponds.

Tip by

5.06 km

Plateau de la Foresterie - Vosterijplateau

Forest

4

7.83 km

The Sonian Forest

Highlight • Forest

Groenendaal station is also our gateway to the Sonian Forest. You can't miss it, the world's largest beech trees are here. Their trunks have diameters of up to 160 centimeters and some peaks up to 50 meters high in the air. They are often even more than two centuries old. Parts of this 'primeval forest' have been recognized as a UNESCO World Heritage Site. Together with the magical Hallerbos, which is covered every spring with a purple blanket of wild bluebells and the Meerdaalwoud-Dijle Valley, it is part of the Brabantse Wouden National Park. A valuable walking tip!

Translated by Google •

Tip by

5

8.38 km

New track with impeccable asphalt between Groenendal and La Hulpe (if you have known the "cycle sidewalk" before, this is a major and welcome change..!)

Translated by Google •

Tip by

B

18.0 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

14.8 km

1.51 km

762 m

752 m

130 m

< 100 m

< 100 m

Surfaces

15.0 km

1.73 km

1.11 km

< 100 m

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (120 m)

Lowest point (70 m)

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Weather

Powered by Foreca

Thursday 16 July

26°C

16°C

11 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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