In Photos: The Endurance Event

The course, which requires competitors to surmount a number of obstacles, was about 12km (7.5 miles) long
Photograph: Oli Scarff/AFP/Getty Images

The course featured more than 250 obstacles, from balancing logs to net walls
Photograph: Nigel Roddis/EPA

The competition was first held in 1986, and claims to be the first of its kind
Photograph: Oli Scarff/AFP/Getty Images