World's Toughest Mudder

View all races for Jun 2026

World's Toughest Mudder is the pinnacle of obstacle course racing, pushing competitors to their physical and mental limits over a relentless 24 hour challenge. Held at Belvoir Castle, participants tackle as many 5 mile laps as possible, with every circuit featuring demanding terrain, brutal climbs and a constantly evolving mix of signature and exclusive obstacles.

Athletes can compete individually for the coveted Last One Standing honours or enter as part of a four person relay team, sharing the challenge while experiencing the unique atmosphere that defines this legendary endurance event. Between laps, competitors return to the central pit area to rest, refuel and prepare for the next hour's battle.

Every lap tests strength, endurance, resilience and determination, with medals and exclusive finisher rewards recognising those who conquer the challenge. Combining world class obstacle racing, overnight endurance and an unforgettable community spirit, World's Toughest Mudder is regarded as one of the toughest endurance events on the planet.

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