
Marathon de la Forêt de Soignes
42.195 km in the heart of the Sonian Forest. Take on the challenge of the ultimate distance on a course surrounded by nature, right on the doorstep of Brussels. A marathon to test your endurance and kick off your season on February 28!

90%
off road
1
Wave
Sports Centre
Sonian Forest
See you at the start!
Registrations are open
You can sign up for this event right now.
This event uses the registration platform

Sunday, February 28
on the course
Finish before 16:30
42.195 km de sentiers, de nature et d’évasion au cœur de la Forêt de Soignes, aux portes de Bruxelles.


the following brands
We're proud to partner with leading brands who share our passion for adventure, performance, and pushing beyond limits.
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.
What to bring
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
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…
Key times

