4.4
(579)
3,668
riders
99
rides
Gravel biking around Grimbergen offers a diverse landscape characterized by rolling hills, valleys, and extensive green spaces. The region features a network of unpaved gravel roads, 4x4 tracks, and some singletrack sections, often incorporating paved and cobblestone stretches. Natural features include the Zenne river and significant forested areas like the Sonian Forest and Kravaalbos. Elevation changes are present, with several hills providing panoramic views.
Last updated: July 12, 2026
4.7
(33)
154
riders
65.1km
04:25
540m
540m
This difficult 40.5-mile gravel biking loop from Brussels explores the ancient Sonian Forest, a UNESCO World Heritage site.
5.0
(1)
88
riders
90.4km
04:58
590m
590m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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5.0
(1)
71
riders
116km
06:43
750m
750m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
4.5
(8)
32
riders
52.7km
03:10
260m
260m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(4)
43
riders
56.0km
03:18
90m
90m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
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This tour goes for kilometers through the forest. In spring it is beautiful with the hyacinths and wood anemones. In summer nice and cool.
0
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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
0
Skylane from Brussels with the Atomium and the Belgian flag on top.
4
0
The cyclist has to be prepared for cobblestones here.
2
0
Beautiful gravel roads. It's pleasantly cool in the forest. You just have to be careful of the sharp turns on the gravel.
6
0
As a cyclist, you can still ride several beautiful kilometers through the forest. It's not like you're through it right away.
5
0
Abbey Farm, Horse-Forest Association
1
0
Grimbergen offers a wide selection of gravel biking opportunities, with over 140 routes available on komoot. These routes cater to various skill levels, from easy to difficult.
The gravel bike trails around Grimbergen feature a diverse range of surfaces. You'll encounter unpaved gravel roads, 4x4 tracks, and some singletrack sections. Many routes also incorporate paved stretches and, notably for the region, occasional cobblestone sections, adding to the classic Belgian cycling experience. Expect rolling hills, river valleys, and dense woodlands.
Yes, Grimbergen has options for less experienced gravel bikers. There are over 20 easy routes available, perfect for those looking for a more relaxed pace. These routes often feature gentler terrain and less elevation gain.
For experienced riders seeking a challenge, Grimbergen offers over 50 difficult routes. One such route is the Pond at Vogelzangpark – New asphalt along the canal loop from Jette, which covers 33.2 km with significant elevation. The region's routes, especially those venturing towards the Sonian Forest, are known for their challenging climbs and varied terrain.
Many gravel routes in Grimbergen pass by significant natural features and historical landmarks. You might cycle along the Zenne river, past Grimbergen Lake, or through forested areas like the Kravaalbos and the expansive Sonian Forest. Notable landmarks include the historic Grimbergen Abbey, which offers panoramic views, and the Plantentuin in Meise (Botanical Garden). You can also explore highlights like The Putten van Lacourt or Hennenput Pond, Buggenhoutbos.
Yes, many gravel routes around Grimbergen are designed as loops, allowing you to start and finish at the same point. Examples include the Little bridges in the Moorbos – Floordambos Forest Path loop from Vilvoorde, which is a moderate 59.6 km ride, and the Nekkerweg Singletrack – Maalbeek Trail loop from Jette.
The gravel biking routes in Grimbergen are highly rated by the komoot community, with an average score of 4.4 stars from over 700 reviews. Riders often praise the diverse landscape, the mix of challenging and scenic paths, and the well-maintained trails that traverse natural reserves and historical sites.
While many routes offer varied terrain, Grimbergen does have easier options that can be suitable for families. Look for the 'easy' graded routes on komoot, which typically have less elevation and smoother surfaces. The region's green spaces and parks also provide pleasant environments for shorter, less strenuous rides.
The spring and autumn months generally offer the most pleasant conditions for gravel biking in Grimbergen, with milder temperatures and beautiful scenery. Summer can also be good, but be prepared for warmer weather. During winter, some trails might become muddy, especially after rain, so checking local weather conditions is advisable.
Yes, the region around Grimbergen is dotted with charming villages and historical sites, many of which host cafes and pubs. The Grimbergen Abbey, for instance, is known for its brewery. Planning your route to pass through these areas can provide opportunities for refreshments and a taste of local culture.
Grimbergen is accessible by public transport, and some routes, particularly those starting closer to Brussels, can be reached via train or bus. It's recommended to check local public transport schedules and policies regarding bicycle carriage before planning your trip.
Generally, cycling is permitted on designated paths in public forests and nature reserves in Flemish Brabant, including areas like the Sonian Forest and Kravaalbos. However, it's always good practice to respect local signage and regulations, especially in protected natural areas, to ensure you stay on permitted routes.


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