UTDS 100KM Relay
UTDS 100 km Team Race
Share the ultra, experience the adventure together
The Ultra Trail des Sources 100 km can also be tackled as a relay race, an ideal way to get a taste of the intensity of an ultra-marathon whilst enjoying the experience as a team.
Here, each runner does their bit before passing the baton at designated points, fuelled by the same energy that makes great team adventures so special.
The route takes in the region’s most beautiful landscapes: Ardennes forests, rugged valleys, challenging trails and more open stretches near the Hautes-Fagnes, in a succession of settings that give each leg its own character.
Some sections will demand speed, others pace management, and others still mental strength and strong legs. That is the whole point of the format: putting together a complementary team, distributing the workload, choosing the right order, and cheering on your teammates right to the finish line.
The relay allows you to share the thrills of an ultra without running the entire distance, whilst retaining what makes the UTDS so magical: the terrain, the atmosphere, pushing yourself to the limit and the intensity of every kilometre.
Whether you come with friends, colleagues or fellow trail enthusiasts, this 100 km relay transforms a race into a shared adventure.

Kilomètres
Mètres D+
Participants max
Practical Information
22/08/2026 - 05:00 AM
Start
Sarrt-lez-Spa
Price
70 €
Number of participants
150
Distance
100km
Elevation gain
3003 m
Refreshment points
5 (+1)



