100k.be is born! One distance, endless challenges.

100 kilometers. A magical distance. An ultimate challenge. And from now on, its own brand and website: www.100k.be.

100-kilometer trail running is more than just running a race. It is an adventure where physical strength, mental resilience, and perseverance come together. A distance that commands respect and where every kilometer counts.

With the launch of 100k.be, we are giving this special distance the attention it deserves.
One brand for our most beautiful 100-kilometer trails

In recent years, interest in ultra trails has grown significantly. More and more trail runners dream of one day reaching that magical 100-kilometer mark.

With 100K.be, we bring our 100-kilometer races together under one recognizable brand. From the forests of the Ardennes to the hills of the Voer region and the challenging landscapes of Luxembourg.

Different courses, different challenges, but always the same goal: reaching that finish line after 100 kilometers.

Discover our 100K challenges for 2027

On our new website, you will discover the following events, among others:

During our first four 100K events of 2026, no fewer than 684 participants reached the finish line.

With an average finish time of around 16 hours and a finisher rate of 87%, this distance proves that it is not just about speed, but above all about perseverance.

Whether you cross the finish line first or last: completing 100 kilometers is an achievement to be proud of.

A new website for the 100K community

With the launch of www.100k.be, we want to do more than just present our races.

We want to create a place where ultra trail enthusiasts discover their next challenge, keep pushing their limits, and get inspired to take on that magical distance.

On our new website, you will find an overview of our 100K events, information about the various races, and the opportunity to register directly.

Are you ready for the magical 100 kilometers?

Maybe you already have several ultra trails under your belt. Maybe you've been dreaming of your first 100 kilometers for years. Or maybe you're just looking for a new challenge.

Whatever your motivation, on 100K.be you will find an adventure that suits you.

You can find us here :  www.100k.be | Facebook page | Facebook group