A Cambridge University student bested competitors in the 24th running of Britain's Tough Guy challenge through hot coals, icy ponds and a manure-filled pit.

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Overall winner James Appleton, 28, was one of 600 racers treated for hypothermia Sunday in Perton, The Daily Telegraph reported Monday.

The charity event, billed as the world's toughest endurance battle, drew male and female competitors from 25 countries who dressed in wet suits, dresses, fatigues and, in the case of one man, just a thong.

Hundreds failed to finish the Army-style assault course through barbed wire tunnels, burning tires and other perilous obstacles, including the manure-filled pit. Contestants are advised beforehand to undergo "cold-water training" to guard against hypothermia.

This year's challenge, dubbed the "Year of the Gorilla Guerrillas," left many moaning, shouting and screaming, said an unidentified ambulance driver.

"There were a lot of injuries, but there were no deaths this year," he said. "Overall, it's been quite successful."