It's billed as the toughest race in the world, and it's not hard to see why when competitors face being burnt, scratched, bruised and even electrocuted.
But thousands of people today took to the eight-mile assault course, through water obstacles and mud, as they competed in the annual Tough Guy challenge.
Competitors are expected to haul their exhausted bodies through thick mud, under yards of barbed wire and over huge wooden barricades before hurdling walls of fire and plunging into a freezing lake.
Around 5,000 competitors take on the challenge every year but up to a third of those never make the finishing line
And this year's event, the 24th running of the race in Perton, Staffordshire, was made even tougher by the rapid melt of snow which took place overnight, caking the entire course in thick mud before it was started by former Grenadier Guardsman Billy Wilson.
Event organiser 'Mouser' Wilson, said: 'We didn't have much ground space, we had about 5,000 people here and we had to shut the doors to the public because everybody wanted to do it.