Diretor: Mariah Moore

Forty of the world's top athletes battle through 15 events and five grueling days of competition for the title of Fittest on Earth. Who will rise to the top and prove the fittest?

Elite athletes take on a series of grueling tests to vie for the title of "Fittest on Earth." Follow the drama as they endure the unknown and unknowable during four of the most intense days of comp...