100k.be
100 kilometers. The magical distance in trail running. Pushing limits, challenging yourself, and keeping going. Discover our 100K events in Belgium and find your next ultra trail.
9.1
Review Score
5
Events
87%
average finish rate
UPDATES
Latest News
No updates right now. Check back soon!
NOTIFY ME
We'll keep you in the loop!
Registrations for this event are not yet open.
Leave your email to be notified when registrations will open and to receive important news about this event.
Total Finishers
684
4 first events 2026
Most finishers
305
Grizzly Bear Trail
Average
16u
finish time
The mythical distance - discover Belgium's 100km trails
Discover our
EVENTS
Find your race
6of 6 events
Trail Calendar Belgium
the 40 most popular trails
Is 100k for now to far for you ? On trailrun.be you will discover a wide and varied range of trail runs, for both beginner and experienced trail runners. With more than 40 events on the calendar and distances from 10 to 100 km, you will always find a challenge that suits you.
TRUSTED BY
the following brands
with the help of our friends and great partners
Latest News
Trailrunning updates
Discover the latest (trail) news here first.
New in 2027: Trail du Grand Ballon gets a winter edition
Major makeover for Trail des Sangliers
Epic Trail returns
A new start for the Marche of Dinant
La Printanière 2027: ten years, five distances and still the Grand Ballon in sight
Livio plus
Drielandenpunt Trail 2027: new courses, new distances, and a new two-day event
The Castle Trail Bouillon becomes Trail Godefroy Bouillon Winter
Scott Trails - 1 weekend - 3 races
Volg ons
#100k.be
Vind ons op Instagram, TikTok of zelfs Facebook: we delen een stukje van ons dagelijks leven met je!