Tough Mudder - World's Toughest Mudder

World's Toughest Mudder is the ultimate 24-hour obstacle course challenge, set to take place on June 28 and 29, 2025, at Belvoir Castle in Grantham, Lincolnshire, UK. This extreme event tests participants' endurance and strength through a series of grueling obstacles, including Electroshock Therapy and Cry Baby. Competitors can register as individuals or in teams of up to four for a relay format.

Participants earn medals, finisher shirts, and the chance to win cash prizes in various categories. The event also features a vibrant atmosphere with food trucks, music, and a celebratory brunch for participants and their supporters. Visit the organization's website for the most recent information.