We are MacTuff; Scotland’s toughest obstacle course race, held at Knockhill Racing Circuit. MacTuff 7K Sprint takes place over challenging terrain; through mud, water and obstacles. Its built to test your physical strength and your mental grit because we believe that true character is built through true challenge. This race is for anyone who has ever wanted to challenge themselves. It is for the thrill seekers, the renegades, the adventurers. MacTuff is for anyone looking to discover what exactly they are made of.