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Belgium
Flanders
Flemish Brabant
Halle-Vilvoorde
Hoeilaart

Keizer Karelvijver – Zonienwald (Sonian Forest) loop from Groenendaal

Routes
Running trails & routes
Belgium
Flanders
Flemish Brabant
Halle-Vilvoorde
Hoeilaart

Keizer Karelvijver – Zonienwald (Sonian Forest) loop from Groenendaal

Hard

4.5

(4)

122

runners

Keizer Karelvijver – Zonienwald (Sonian Forest) loop from Groenendaal

02:02

19.2km

150m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 16, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Bosreservaat Joseph Zwaenepoel

Nationaal Park Brabantse Wouden

Waypoints

A

Start point

Train Station

Get Directions

1

1.10 km

Keizer Karelvijver

Highlight • Lake

The Keizer Karelvijver is one of the twelve ponds on the upper reaches of the IJse. They are fed by springs and by the river IJssel that rises further in …

Translated by Google •

Tip by

2

1.58 km

Grenouille Signpost

Highlight • Monument

3

3.41 km

Sonian Forest

Highlight • Forest

The Sonian Forest, also known as the Zoniënwoud, is a large forest area centrally located in Belgium, southeast of Brussels. It covers approximately 4,421 hectares and is best known for …

Translated by Google •

Tip by

4

6.95 km

Drève Saint Michel Parking

Highlight • Parking

Parking ideally located to discover the Sonian Forest.

Translated by Google •

Tip by

5

11.1 km

Waterloo - Rhode crossing via KO

Highlight (Segment) • Trail

B

19.2 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

17.1 km

1.52 km

186 m

157 m

< 100 m

< 100 m

Surfaces

11.3 km

2.24 km

2.12 km

1.47 km

1.10 km

880 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Wednesday 1 July

23°C

14°C

76 %

Additional weather tips

Max wind speed: 22.0 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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