Thousands of competitors battled through knee-deep mud and braved bitterly cold conditions yesterday to take part in a race billed as the world's ultimate test of endurance.
Entrants wearing fancy dress and others wearing little clothing at all were among those taking part in the Tough Guy challenge at Perton, south Staffordshire.
Those courageous enough to enter the event, which incorporates an Army-style assault course, are advised to undertake "cold water training" beforehand to guard against the threat of hypothermia.
Open to individuals and teams, the event is described by its organisers as a "uniquely fear-ridden" test of both body and spirit.
The biannual event to raise cash for charity challenges thousands of international competitors to run through a gruelling set of 21 obstacles including water, fire and tunnels after a lengthy run at the startReuse content