4.4
(184)
4,316
riders
185
rides
Gravel biking in Grotenhoutbos - Gierlebos offers a diverse landscape for riders. The region features one of the largest and oldest forests in the Kempen, spanning 300 hectares with ancient oak, beech, ash, and alder trees. Riders traverse an alternating terrain of rich subsoil, arid grasslands, and unique open areas known as "houwen." Several watercourses, including the Breemloop, Oude Dijkloop, and Bosloop, crisscross the flat terrain, enhancing the scenic beauty of the routes.
Last updated: August 4, 2026
5.0
(1)
86
riders
75.8km
04:11
100m
100m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
riders
99.9km
05:49
150m
150m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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12
riders
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
9
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
55
riders
56.3km
03:18
70m
70m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The Grotenhoutbos, also known as the Gierlese Bos, is a forest in Flanders, southwest of Turnhout, on the border of the municipalities of Vosselaar and Gierle. It covers an area of 375 hectares and is part of the Natura 2000 area "Forest and heathland areas east of Antwerp." https://nl.wikipedia.org/wiki/Grotenhoutbos
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It really is De Grote Nete here for anyone who still doubts...
7
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Generations of castle lords and the village community have cared for the magnificent heritage we have today. We must cherish this legacy with care. Everyone has a responsibility in this regard: the government, the owners, and certainly also the visitors. We all want to safeguard this for future generations. VORSELAAR: Proposal to protect the castle "de Borrekens", the rectory, the immediate surroundings of the castle, and the linden avenue as a village landmark. The castle was built in the thirteenth century as a military fortification for the Duke of Brabant, granted as a fief to the Lord Van Rotselaer. The latter gave the fortification, which had the character of a moated castle, the ground plan that can still largely be seen today. Little is known about its evolution since the thirteenth century. The castle is depicted in a print by Ertinger in the second half of the seventeenth century and published by Jacques Le Roy. This shows that the current castle's core still largely reflects this condition. The building's military character was lost in the eighteenth century, and it was converted into a "house of pleasure." This involved the demolition of several surrounding walls and defensive towers, and the moat separating the forecourt from the castle was filled in. Simultaneously or shortly before, several embellishments were carried out on the castle, with J.P. van Baurscheit as the architect. The buildings in the forecourt were constructed during the same period. In the 1850s and 1860s, restoration work was carried out in keeping with the fashion of the time. Several dormers, stepped gables, fireplaces, turrets, and battlements were added in the Neo-Gothic style. The interior was also altered during this period and in the same style. Although this renovation significantly altered the castle's appearance, the renovation itself is remarkable as a testament to the Neo-Gothic style that emerged in our region around 1850.
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Protected cycle path (gravel). Essentially a straight line from Oelegem to Sint Job in 't Goor (connecting with the Schoten Canal). Despite its straightness, it's not endless and offers plenty of variety.
3
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Do you mean Kleine Nete?
4
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Gradually the fish learn to swim...
5
0
An idyllic spot with a view of the pond
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Grotenhoutbos - Gierlebos offers a wide selection of gravel biking routes, with over 200 trails available. These range from easy to difficult, ensuring options for various skill levels.
You can expect a diverse landscape featuring one of the oldest and largest forests in the Kempen, with ancient oak, beech, ash, and alder trees. The routes traverse an alternating terrain of rich subsoil and arid grasslands, including unique open areas known as 'houwen.' Several watercourses, such as the Breemloop, Oude Dijkloop, and Bosloop, crisscross the flat terrain, and you'll frequently encounter impressive avenues lined with oak and beech trees.
The routes in Grotenhoutbos - Gierlebos cater to various fitness levels. There are 29 easy routes, 126 moderate routes, and 48 difficult routes. For example, the Vorselaar Castle – Borrekens Castle loop from Vosselaar is a moderate option, while the Hollow Road and Climb – Grotenhout Pond loop from Vosselaar is considered difficult.
Yes, many of the gravel bike routes in Grotenhoutbos - Gierlebos are circular. For instance, the popular Grotenhoutbos Lake – Along the Grote Nete loop from Vosselaar is a loop trail that takes you through ancient forests and along watercourses.
The trails offer a mix of natural beauty and historical landmarks. You can explore the ancient Grotenhout Forest, admire the Beech Avenue, and spot unique features like the Tinder Fungus Tree. Historically significant sites like Westmalle Castle and Borrekens Castle are also often incorporated into routes, such as the Westmalle Castle – Zoerselbos loop from Gierle.
Yes, the area features several scenic spots, particularly around its central pond. You can find benches with a view of the pond, offering tranquil resting places. Other viewpoints include the View of the Pond near E34 and a spot for viewing herons at the lake, perfect for wildlife observation.
The diverse landscapes of Grotenhoutbos - Gierlebos are enjoyable throughout the year. Spring brings vibrant flora like muskroot and wood anemone, while autumn offers stunning foliage in the ancient forests. The flat terrain means routes are generally accessible, though some areas might be marshy after heavy rain, particularly in spots like the 'Rotte Del'.
Yes, the area is generally accessible and enjoyable for outdoor enthusiasts. While some routes are challenging, there are also easier options. The presence of well-maintained paths, some even suitable for strollers, suggests a welcoming environment for families, though specific family-friendly gravel routes would depend on the children's biking experience.
The region is rich in biodiversity. Around the central pond, you might spot various wildlife, including butterflies, dragonflies, frogs, and toads. The diverse vegetation supports over 360 plant species, and the ancient forests are home to various birds and small mammals. Keep an eye out for herons near the lakes.
Yes, there are designated parking areas. For instance, you can find a bench at Grotenhoutbos Parking, indicating facilities for visitors arriving by car.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 120 reviews. Reviewers often praise the varied terrain, the beauty of the ancient forests, and the mix of challenging and moderate options. The historical landmarks and serene ponds also contribute to a highly enjoyable experience.


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