Climb. Suffer. Resist.

The Ardennes Monster is the hardest ultra cycling race in Belgium. The Monster is not your friend.

Tame him.

94 dreamers, … 42 finishers

On the first two editions, 94 dreamers thought about defeating the Monster... but only 42 manage to rise above the Citadel of Namur, the final barrier of this impossible course. Relive the Chapter II.

Images : Nova Production, Fabio Duez, Hugo Spina, Lucas Izzi


To become a Hero, all you need to do is deliver the final blow to the Monster. Isn't it child's play ?


Sweat and blood.

They have written The Ardennes Monster History., in golden letters.


Many have walked on the steepest slopes of the Kingdom. Many have left a piece of their soul there...

Words of Heroes

"This is the toughest and most physically and mentally demanding challenge I have ever done.

The route and its characteristics stand out from any other event of its kind, making the race unique.

Be aware that the effort will be intense, distinct, perhaps even more so than a 'classic' ultra.

The atmosphere is strong and adds an extra dimension, and the communication about the event is effective, both for loved ones and participants."

Anthony Joannes

Edition 2023, France

« The event was first class. This was their first time organizing an event and it seemed like they had been doing this for years.

Many thanks go out to Olivier and his crew, they worked their asses off and put on a hell of an event.

I would highly recommend The Ardennes Monster to others. »

kevin schaffer

Edition 2022, USA

The question of The Ardennes Monster remains. I have experienced inner monsters at times : fears of what might happen. Also, monsters that seem to dominate our world temporarily, such as competition, selfishness, power – but also the division into winners and losers.

If the cycling event “The Ardennes Monster” contributes to us reflecting on the monsters within ourselves and in the world and leaving them behind to embark on a more just and solidarity-driven world, then I have long reconciled with the name of this loving and beautiful event.

An extra thanks to Olivier and his team who supported him in

organizing this loving event.

CHristoph fuhrbach

Edition 2023, Germany

An extraordinary experience

Ardennes Classics

Ride where Champions are fighting. Climbs from Liège-Bastogne-Liège, the Flèche Wallonne, or the Wallonia GP, you won't be disappointed.


The race is 100% self-supported. Useless to call your mom.

plus d 100 côtes

Listed climbs like the Redoute, the Wall of Huy... but get ready to discover many others that are even harder.

Champions area

Belgian Ardennes are rich of cycling history. You will ride on the breeding ground of champions. Become one of them, in this amazing territory.

Dare you go into the Monster's den ?

Going further... ? Fly, you fools !

The Route

Discover the route. Caution ! It is scary.

The Climbs

The most famous climbs are not the hardest. See that here.


All info you need to take part to this crazy adventure.


Dream or Nightmare ? Welcome to Hell 

Our partners

Will you beat Belgian riders ?

Proud of our cycling culture, we will defend our home ! More info in the rules statement.

You want to challenge the Monster ?
Book your entry !

Registrations are limited. Don't wait, or go play 1,2,3 piano.

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