Obstacle races are badly named. The Tough Mudder, Goruck Nasty, and Spartan Race force participants to handle a series of hazards on their way to the finish line. There are only a handful of physical challenges on Earth that force competitors to confront a single, nearly insurmountable obstacle and overcome it. These events separate the boys from the men from the superheroes and they are as fun as they are difficult
These six tests of athletes heroism are arduous, complicated, and technical. They also each test a different superhero trait. No one will ever master all of them, but if you focus on the one you're best suited to attempt, you'll have the opportunity to prove your mettle once and for all. You'll never be superman, but that doesn't mean you can't have one super power. Choose yours and prepare for a true test.
Trekking hundreds of miles across a desert is generally an activity reserved for the desperate, but during the Four Deserts Ultramarathon, participants actually choose to run some 150 miles through the world's most inhospitable areas. These extreme athletes carry their own food and equipment and sleep in tents during the race's first three stages, which are held in the Gobi Desert, the Sahara, and the Atacama. Complete two of the first three and your reward is an invitation to take part in the final stage, a walk across Antarctica.
Credit: Pierre Verdy / AFP / Getty Images