An Urban Trail through the streets and paths of Watermael-Boitsfort
Two magnificent courses, accessible to EVERYONE.
Next edition : October 2026
2 Routes
7.11 km or 11.70 km, you choose your distance! For children, a fun race in the stadium.
Your time
Set yourself a goal or simply enjoy a wonderful walk through the beautiful areas of 1170.
Start"racing"
For the most competitive, an exclusive start and a photo finish on the 3 Tilleuls track.
Don't miss the opening of 2026 registration!
A trail run in the heart of Brussels
You can choose between two distances, exploring the most beautiful streets and paths of Watermael-Boitsfort.
To be covered by running or walking briskly.
For the little ones, there is a fun run starting at the Trois Tilleuls stadium track (800m and 1600m).
In short, a sporting challenge open to all in the heart of Brussels, full of passion and adventure!
Discover the Routes
Racing Box
Who will be the first winner of the UTWB?
A race “just like the pros”, limited to 100 riders.coureur.es who start before everyone else.
- Adrenaline and crazy vibes all along the course.
- Official UTWB finish “at the banner.”
What’s the difference with the other categories?
Unlike the regular categories, the racing experience guarantees you a head start, in a group limited to just 100 riders.
You’re sure to be able to give it your all, without being held up by other participants.
More Racing info
A unique race in one of the most beautiful municipalities of Brussels.
Run through the streets, paths and trails to discover the most iconic places of the municipality of Watermael-Boitsfort.
Partners of the UTWB
We’re in good company.
