4.6
(105)
3,175
runners
51
runs
Jogging routes around Hoeilaart are primarily defined by the region's direct access to extensive green spaces, notably the vast Sonian Forest and the Bois de la Cambre. This area offers varied and natural terrains, characterized by unspoiled relief and subsoil that have remained untouched by agriculture for millennia. The landscape provides numerous paths and trails suitable for diverse running experiences, from long-distance routes to shorter, leisurely jogs through dense woodlands.
Last updated: May 4, 2026
4.4
(19)
237
runners
13.3km
01:27
100m
100m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(15)
146
runners
6.10km
00:39
40m
40m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.4
(23)
1,381
runners
11.1km
01:12
70m
70m
Moderate run. Good fitness required. Mostly accessible paths. Some sure footedness required.
4.5
(4)
122
runners
19.2km
02:02
150m
150m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
96
runners
24.4km
02:35
200m
200m
Hard run. Very good fitness required. Mostly accessible paths. Some sure footedness required.
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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.
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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 a smooth access, it received its own rail connection to Groenendaal station. To realize this racecourse, about 100 hectares of forest were cleared at the end of the 19th century. King Leopold II had his own box 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. A fire and the subsequent explosions of ammunition on May 6, 1919, heavily damaged the grandstands and buildings of the hippodrome. 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 only rebuilt in 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 bookmakers' room, https://id.erfgoed.net/erfgoedobjecten/302991
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The routes vary from gentle flats to gentle climbs, ideal for a refreshing ride. In spring, flowers bloom along the paths, while autumn transforms the forest into a colourful palette of gold and red.
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Very quiet...beautiful views and easy hiking trails 👌
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Nature oasis: wonderful to relax, with only the sounds of the forest to be heard.
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Next to the arboretum you will find the old Groenendaal practice track. Scottish highlanders now graze there, which you can best spot from the viewing platform.
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Enjoy the lush green landscape here.
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There are over 40 diverse running routes around Hoeilaart documented on komoot. These trails offer a wide range of experiences, primarily within the extensive green spaces of the Sonian Forest and Bois de la Cambre.
The running trails in Hoeilaart cater to various fitness levels. You'll find 4 easy routes perfect for a relaxed jog, 36 moderate routes for a good workout, and 1 difficult route for those seeking a challenge. The varied terrain, often untouched by agriculture, provides natural and engaging paths.
Yes, Hoeilaart offers several easy running routes suitable for beginners or those looking for a less strenuous run. These routes allow you to enjoy the natural beauty without significant elevation changes. For example, the Nature Run Sonian Forest (short variant) is a moderate 3.8-mile path that provides a taste of the forest's tranquil environment.
Many of the running routes around Hoeilaart are designed as circular paths, allowing you to start and finish at the same point. This is convenient for parking and accessibility. An example is the Lit tunnel loop from Hoeilaart, which is a 6.9-mile trail through the local green belt.
While jogging around Hoeilaart, you'll primarily experience the rich natural beauty of the Sonian Forest, known for its ancient beech trees and unspoiled relief. You might also encounter historical sites and natural monuments. For instance, the Keizer Karelvijver – Zonienwald (Sonian Forest) loop from Groenendaal takes you past the beautiful Keizer Karelvijver pond. Other nearby attractions include the historic Château de La Hulpe and the serene Domaine Solvay.
Yes, the extensive network of trails, especially within the Sonian Forest and Bois de la Cambre, includes many paths suitable for families. The varied and natural terrains offer safe and enjoyable environments for all ages. Look for shorter, easier routes that avoid significant elevation, such as the Nature Run Sonian Forest (short variant), which is a good option for a family outing.
Many of the trails in the Sonian Forest and Bois de la Cambre are dog-friendly, making Hoeilaart a great place to run with your canine companion. It's always recommended to keep dogs on a leash and be mindful of local regulations, especially in protected natural areas, to ensure a pleasant experience for everyone.
Hoeilaart is well-connected, and many running trails, particularly those within the Sonian Forest and Bois de la Cambre, are accessible via public transport. Specific bus routes or train stations can bring you close to various entry points of these green spaces. It's advisable to check local public transport schedules for the most convenient access to your chosen starting point.
Yes, parking is generally available near the main access points to the Sonian Forest and other popular running areas around Hoeilaart. Many trailheads and recreational zones offer designated parking facilities, making it convenient for runners to access the routes. For specific routes, you can often find parking information on the individual tour pages.
The running routes in Hoeilaart are highly rated by the komoot community, with an average score of 4.6 stars from over 80 reviews. Runners frequently praise the extensive green spaces, the tranquil atmosphere of the dense woodlands, and the varied natural terrains that offer a refreshing escape. The proximity to the Sonian Forest is often highlighted as a major draw.
Hoeilaart offers excellent running conditions throughout much of the year. Spring and autumn provide pleasant temperatures and beautiful scenery with changing foliage. Summer is also great, especially for shaded forest runs. Even in winter, the trails can be enjoyed, though some paths might be muddy or require appropriate footwear. The 'beech cathedral' of the Sonian Forest is particularly stunning in all seasons.
Yes, some running routes in the Hoeilaart area incorporate beautiful water features. For example, the Long Tail Pond – Long Tail Pond loop from Hoeilaart is an 11.4 km route that takes you past serene ponds, offering picturesque views and a refreshing element to your run.


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