Participants make their way round the course during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Ben Hoskins/Getty Images)

A competitor crawls under barbed wire during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor runs through a burning obstacle during the Tough Guy event in Perton, central England, January 26, 2014. (Photo by Darren Staples/Reuters)

A competitor tries to avoid the water during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor climbs a mud banking during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor climbs a muddy bank during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor runs past a fire during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A fancy dress competitor wades through water during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor pulls herself out of a tunnel during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor dressed as a knight runs through a fire during the Tough Guy Challenge on January 26, 2014 in Telford, England. (Photo by Bryn Lennon/Getty Images)

A competitor makes his way through an obstacle during the annual Tough Guy race “the toughest race in the world” at Perton in Staffordshire, England, Sunday Jan. 26, 2014. (Photo by Jon Super/AP Photo)

A competitor reacts as she emerges from the water during the Tough Guy event in Perton, central England, January 26, 2014. (Photo by Darren Staples/Reuters)

A competitor is dragged out of the mud during the Tough Guy event in Perton, central England, January 26, 2014. (Photo by Darren Staples/Reuters)

A competitor falls in to muddy water during the Tough Guy event in Perton, central England, January 26, 2014. The annual event to raise cash for charity challenges thousands of international competitors in a cross country run followed by an assault course consisting of obstacles including water, fire and tunnels. (Photo by Darren Staples/Reuters)

A competitor jumps across a burning obstacle during the Tough Guy event in Perton, central England January 26, 2014. (Photo by Darren Staples/Reuters)

A competitor makes his way through an obstacle during the annual Tough Guy race – “the toughest race in the world” – at Perton in Staffordshire, England, Sunday Jan. 26, 2014. (Photo by Jon Super/AP Photo)

Competitors makes their way through a water obstacle during the annual Tough Guy race “the toughest race in the world” at Perton in Staffordshire, England, Sunday January 26, 2014. Tough Guy claims to be the world's most demanding one-day survival ordeal. First staged in 1987, the Tough Guy Challenge has been widely described as one of the hardest races of it's type with up to one-third of the starters failing to finish in a typical year. (Photo by Jon Super/AP Photo)