British Obstacle Sports is proud to welcome World’s Toughest Mudder to the UK for the very first time. As the pinnacle event in the Tough Mudder calendar, WTM represents everything we love about obstacle course racing—endurance, grit, teamwork, and an unbreakable community spirit.

We look forward to seeing athletes from across the world take on the course, push their limits, and showcase what this sport is all about. Whether you’re aiming for the podium, a personal milestone, or simply to be part of something unforgettable, we’ll be cheering you on. We’re also thrilled that TMHQ has agreed to include WTM as part of the 2025 BOS OCR Endurance League.

To support everyone on their journey, we’ve got an infamous puzzle piece to share.

To unlock we need you to find 28 Tough Mudder hidden words in our World’s Toughest Word Search. If you need a clue you’ll need to complete a mini-challenge.

Find all the hidden words—across, down, diagonally, and even backwards.

Good luck in the search and most importantly at Belvoir Castle on June 28th.