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.

UTDS 100k en relais

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)