Tough Mudder X presented by Kill Cliff is the most insane race around, created to disrupt the sports industry. This is the ultimate race to determine the fittest, fastest athletes in the world. This pulse-pounding competition pits the world’s elite athletes against a one-mile course built to put speed, agility, and strength to the test with world-class obstacles and challenging workouts. Tough Mudder X will push good to great, better to best, and The Toughest Athletes on the Planet beyond their limits. This season, on June 8th, we’re headed to Virginia with a brand new batch of epic - Tough Mudder X World Championship. Airing exclusively on CBS Sports in Summer 2018, this electrifying race is the culmination of the Tough Mudder X Open season, and The Coolest F*cking Thing You’ve Ever Seen. Tough Mudder X Open is the proving ground - Tough Mudder X World Championship separates the good from the truly elite in every athletic discipline imaginable - OCR, CrossFit, American Ninja Warrior, and many more - and crowns ultimate winners in the men’s and women’s categories, along with a cool $25,000 to both.