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Routes
Mountain Hikes
Belgium
Flanders
Flemish Brabant
Halle-Vilvoorde

Overijse

The best mountain hikes around Overijse

5.0

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Mountaineering around Overijse offers a diverse landscape characterized by dense woodlands and rolling hills within the broader Halle-Vilvoorde region. The terrain provides varied elevation changes suitable for mountaineering activities, with routes often traversing through established forest paths. This area is known for its natural beauty, providing a setting for outdoor exploration.

Best mountaineering routes around Overijse

  • The most popular mountaineering route is Drowned Children Ponds – Sonian Forest loop from Watermael-Boitsfort - Watermaal-Bosvoorde, a 5.2 miles (8.4 km) trail…

Last updated: May 23, 2026

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hikers

#1.

Drowned Children Ponds – Sonian Forest loop from Watermael-Boitsfort - Watermaal-Bosvoorde

8.44km

02:15

90m

90m

Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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5.0

(1)

1

hikers

Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

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Popular around Overijse

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Tips from the Community

Marc BODSON
November 29, 2025, Horseshoe Pond (Étang du Fer à Cheval)

A solid wood bridge crosses the Horseshoe Pond, which is thus divided into two parts.

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JP
April 11, 2025, Ad's Trail Sculptures

The arboretum in Heverlee is the starting point of the so-called path of Ad, which is no less than 26.2 km long, where you will discover forest figures by tree artist Ad Wouters in various places. Officially it is called: "Soft bears, mischievous gnomes, modern Neanderthals, metre-high mushrooms and other playful figures turn the Meerdaalwoud and the Heverleebos into real fairytale forests. The wooden sculptures are the work of local tree artist Ad Wouters and turn your walk into a fun quest full of wonder. Ad cuts the forest figures from the trunks of dead oaks." And you can find all the information at https://www.visitvlaamsbrabant.be/wandelen/vind-een-wandeling/het-pad-van-ad

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A narrow footpath winds through the Sonian Forest and takes you past impressive beech trees that give the forest its characteristic green glow. The path is surrounded by dense vegetation, so you can fully immerse yourself in the peace and nature of this ancient forest. An ideal route for walkers who want to enjoy a piece of pure, untouched nature close to the city.

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Parc Tournay-Solvay is a beautiful historical park that extends around a former castle estate, with romantic walking paths, lush gardens and a rich variety of trees and plants. In addition to serene ponds and charming bridges, the park also offers panoramic views over the Sonian Forest, making every walk a special experience.

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Willem VS
October 2, 2023, Sonian Forest

The Sonian Forest is an exceptional, vulnerable and ancient forest that is also recognized as a UNESCO World Heritage Site. The forest extends across the three Belgian regions and is one of the best-known and most visited green spaces in the region.

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Willem VS
October 2, 2023, Boitsfort Ponds

The Boitsfort ponds are located in Watermaal-Bosvoorde, between the Sonian Forest and the Tournay-Solvay park, on the edge of the International School park. This valley in Boitsfort consists of three consecutive ponds, connected by the Karregat, a tributary of the Woluwe. The variety of environments is great, with alternating moist forests, open vistas and a reed field. It is an extremely suitable place for amphibians and a favorite hunting ground for dragonflies.

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Beautiful region for walking, cycling or gravel

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Nice technical climb with some tree roots.

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Frequently Asked Questions

What are the typical difficulty levels for mountaineering routes around Overijse?

The mountaineering routes around Overijse primarily offer moderate challenges. All listed routes, such as the Drowned Children Ponds – Sonian Forest loop and the Fourmilière loop, are rated as moderate, making them suitable for those with some hiking experience.

How long do mountaineering routes around Overijse typically take?

Route durations vary, but most moderate mountaineering tours in Overijse can be completed within a few hours. For example, the Drowned Children Ponds – Sonian Forest loop takes approximately 2 hours 15 minutes, while the longer Weertse Dreef, Meerdaal Forest loop can take around 4 hours 18 minutes.

Are there parking facilities available near the trailheads?

Yes, many trailheads in the Overijse region, especially those leading into areas like the Sonian Forest or Meerdaal Forest, typically have designated parking areas nearby. It's advisable to check specific route details on komoot for precise parking information before you go.

Can I reach any mountaineering trailheads in Overijse using public transport?

While some areas around Overijse are accessible by public transport, direct access to all trailheads might be limited. For routes starting closer to urban centers, such as those near Watermael-Boitsfort, public transport options are generally better. We recommend checking local bus or train schedules for specific starting points.

Are there family-friendly mountaineering routes suitable for children?

Given that all routes are rated moderate, they are generally suitable for families with older children who are accustomed to longer walks. Shorter moderate routes, like the Drowned Children Ponds – Sonian Forest loop (5.2 miles), might be a good option for active families.

Are dogs allowed on the mountaineering trails around Overijse?

Generally, dogs are welcome on trails in the Overijse region, especially within the dense woodlands like the Sonian Forest and Meerdaal Forest. However, it's always best to keep them on a leash and adhere to local regulations, particularly in nature reserves or protected areas.

What routes are suitable for beginners in mountaineering?

For those new to mountaineering, the moderate routes around Overijse offer a good starting point. The Ad's Trail Sculptures loop from Vaalbeek is a moderate 4.9-mile (7.9 km) route with less elevation gain, making it a good option to build confidence.

When is the best time of year to go mountaineering in Overijse?

The region's dense woodlands and rolling hills make it enjoyable for mountaineering throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful foliage, while summer provides longer daylight hours. Winter can also be scenic, but trails might be muddy or icy, requiring appropriate gear.

What can I see along the mountaineering routes around Overijse?

The routes often traverse through natural beauty spots. You might encounter interesting geological features like the Valley of the Artists (Wijnbrondal) or explore unique trails such as the Hollow Way and Steps Huldenberg. The region is characterized by its extensive forests and varied terrain.

Are there any circular mountaineering routes in Overijse?

Yes, many of the mountaineering routes around Overijse are designed as loops, offering a convenient way to explore without retracing your steps. Examples include the Drowned Children Ponds – Sonian Forest loop and the Weertse Dreef, Meerdaal Forest loop.

What do other mountaineers enjoy the most about mountaineering in Overijse?

The area is highly rated by the komoot community, with an average score of 5.0 stars. Reviewers often praise the region's dense woodlands, rolling hills, and well-maintained forest paths, highlighting the natural beauty and varied terrain suitable for outdoor exploration.

Are there options for less crowded mountaineering routes?

While popular routes like those in the Sonian Forest can see more visitors, exploring trails in areas like Meerdaal Forest, such as the Weertse Dreef, Meerdaal Forest loop, might offer a more tranquil experience, especially during off-peak hours or weekdays.

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