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BXL run series

4 Apr 2027

Escape the hustle and bustle of the city and discover the green lung of Brussels during the 20 km through the Sonian Forest. This unique course takes you along the most beautiful avenues, forest trails, and hidden spots of one of Europe's most impressive beech forests. A sporting challenge in the heart of nature, just a stone's throw from the capital.

9.0/10

Review Score 2025

3rd

edition

1000+

Participants

Distance

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1 distance

20 km

Offroad

90%

Time limit

5u30

UTMB index

20k