The Ardennes Monster 2026

The Ardennes Monster is Belgium’s most crazy and poetic ultra. Crossing four countries and hundreds of lovely climbs, the race blends cycling legends with forgotten roads, deep forests and lonely plateaus.

The event offers three formats: a massive 1,050 km / 20,000 m+ loop through the heart of the Ardennes, a 500 km / 8,848 m+ version with the same soul and the same sting, and a 300 km to taste the best-of adventure in a more compact dose.

Ride through the wild heart of the Ardennes — a land of ancient forests, winding ridgelines, and quiet resilience. Every valley echoes with natural beauty and the deep scars of world wars that shaped Europe.