20 km from the Sonian Forest
20 km to stride into spring! On April 4, treat yourself to a great adventure in the heart of the Sonian Forest, right on the doorstep of Brussels. The trails are awakening, nature is coming back to life: now it's your turn to recharge your energy and take on the challenge!
90%
off road
3
Wave
Sports Centre
Sonian Forest
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START
10:00 / 11:00 / 13:30
Sunday, April 4
AID STATIONS
2
on the course
TIME LIMIT
03:30
Finish before 13:30
20 km de sentiers, de nature et d’évasion au cœur de la Forêt de Soignes, aux portes de Bruxelles.
ABOUT THE 20KM OF THE SOIGNES FOREST
the following brands
We're proud to partner with leading brands who share our passion for adventure, performance, and pushing beyond limits.
DISCOVER THE SONIAN FOREST DIFFERENTLY
The Sonian Forest Marathon is a great opportunity to explore this exceptional natural area… but not the only one! Throughout the year, the forest can also be discovered through walks, nature activities, heritage tours, and local initiatives. Want to extend your discovery before or after the marathon? Head to the official Sonian Forest website to plan your visit and discover the activities on offer.
EQUIPMENT
What to bring
MANDATORY EQUIPMENT
This gear is mandatory. Time penalties or DSQ for violations possible
Bib worn visibly
Bib worn visibly
Cup with a minimum capacity of 15 cl
Cup with a minimum capacity of 15 cl
Recommended gear
This gear is highly recommended for your safety and comfort.
Trail running shoes with good grip
Trail running shoes with good grip
Clothing suitable for the weather conditions
Clothing suitable for the weather conditions
Livio Live App
Livio Live App
GPX track loaded on a watch or phone
GPX track loaded on a watch or phone
Phone charged
Phone charged
Loading map…
PROGRAM OF THE SOIGNES FOREST 20KM
Key times
Practical Information
