4.5
(722)
4,544
riders
90
rides
Gravel biking around Drogenbos offers access to extensive natural areas, particularly the vast Sonian Forest and the enchanting Hallerbos. The region is characterized by diverse terrain, including compacted gravel paths, unpaved trails, and undulating landscapes, providing varied challenges for gravel cyclists. These areas feature ancient beech forests, some with trees over 200 years old, and a network of trails suitable for exploring natural beauty away from traffic. The proximity to these significant natural features makes Drogenbos a strategic starting point…
Last updated: May 19, 2026
4.6
(99)
586
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.8
(6)
34
riders
62.3km
03:54
680m
680m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.4
(9)
99
riders
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
4.9
(7)
23
riders
41.7km
02:43
310m
310m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
23
riders
62.5km
03:46
460m
460m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
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Popular around Drogenbos
This tour goes for kilometers through the forest. In spring it is beautiful with the hyacinths and wood anemones. In summer nice and cool.
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The Groenendaal racecourse was built in 1888-1889 on the initiative of Leopold II in the middle of the Sonian Forest, next to the road to Waterloo, and in 1892, as part of easy access, it received its own railway connection to Groenendaal station. To realize this racecourse, approximately 100 hectares of forest were cleared at the end of the 19th century. King Leopold II had his own box there, located between two metal grandstands for the public. After the First World War, this area was used for the dismantling of weapons and ammunition left behind in the Westhoek. German prisoners of war had to clear mines under the supervision of the Belgian army. During a fire and the subsequent explosions of ammunition on May 6, 1919, the hippodrome's grandstands and buildings were heavily damaged. After another explosion in November, the ammunition depot was completely dismantled in 1920. Two years later, the racecourse was restored and the grandstands were rebuilt. The royal box for Albert I was not rebuilt until 1924. Its appearance was completely different from the pre-war grandstand. When the current appearance came about is not entirely clear, although the current box is attributed to Albert I in the literature, see also monogram. Inventory of Immovable Heritage: Royal Box and remains of bookmaker's room, https://id.erfgoed.net/erfgoedobjecten/302991
4
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Beautiful resting bench. Take a seat and enjoy the view and the large farm complex below.
4
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Open grassy area with some benches, ideal for a break on dry days.
3
0
A solid wood bridge crosses the Horseshoe Pond, which is thus divided into two parts.
3
0
Nice sighting when out riding, there is a gravel track passing through and a bit later you'll meet a pasture with beautiful Highland Cows!
1
0
Nice strip, but with the drought now many solid holes
0
0
There are over 90 no-traffic gravel bike trails around Drogenbos, offering a wide range of options for all skill levels. This includes 4 easy, 39 moderate, and 47 difficult routes, ensuring there's something for every gravel biker.
The gravel bike trails near Drogenbos, particularly in the Sonian Forest and Hallerbos, feature a diverse mix of surfaces. You'll encounter compacted gravel paths, unpaved trails, and some asphalt sections, with occasional cobblestones. This variety provides both smooth riding and challenging segments.
Yes, the region offers routes suitable for families. While many trails are moderate to difficult, the Sonian Forest has sections with easier, well-maintained paths. Look for routes categorized as 'easy' to ensure a comfortable experience for all family members. The varied terrain allows for different skill levels.
Many routes pass through stunning natural landscapes. You can explore the ancient beech trees of the Sonian Forest, a UNESCO World Heritage site, or witness the breathtaking bluebell carpet in Hallerbos during spring. Other highlights include picturesque châteaux, ponds like the Drowned Children Ponds, and impressive giant sequoia trees.
Gravel biking is enjoyable year-round. However, spring (late April to early May) is particularly magical for visiting Hallerbos when the bluebells are in bloom. Autumn offers stunning foliage in the Sonian Forest. Summer provides longer daylight hours, while winter can offer crisp, quiet rides, though some paths might be muddy.
Yes, many of the gravel bike trails in the area are designed as circular routes, allowing you to start and end at the same point. An example is the challenging Hertboom Mill – Rustberg Climb loop from Lot, which offers a substantial ride through varied landscapes.
Yes, areas like Hallerbos are accessible by public transport, with Halle train station serving as a convenient access point. The Sonian Forest also has various entry points reachable by bus or tram from Brussels, making it easy to start your ride without a car.
The komoot community highly rates the gravel biking experience around Drogenbos, with an average score of 4.47 out of 5 stars. Riders often praise the extensive network of no-traffic paths, the natural beauty of the Sonian Forest and Hallerbos, and the varied terrain that keeps rides interesting.
Absolutely. For experienced riders seeking a challenge, routes like the Hertboom Mill – Rustberg Climb loop from Lot cover over 100 km with significant elevation gain. Another option is the Château de La Hulpe – Domaine Solvay loop from Uccle - Ukkel, offering over 60 km of diverse terrain.
Generally, dogs are allowed in both the Sonian Forest and Hallerbos, provided they are kept on a leash. This ensures the safety of wildlife and other visitors. Always check local signage for specific rules in certain areas or during particular seasons.
There are several designated parking areas around the Sonian Forest, especially at popular entry points. Many routes, such as the Tervuren Park Ponds – Sonian Forest loop from Albert, start from locations with accessible parking, making it convenient to unload your bike and begin your adventure.
Yes, the Sonian Forest and surrounding areas have well-maintained sections with facilities, including cafes and restaurants. You'll find options near popular châteaux or at the edges of the forest, perfect for a break during your ride. It's always a good idea to check opening hours beforehand.


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