Ed Stafford challenges ultra-fit ex-Marine and ropes expert Aldo Kane to a race across the tangled wilds of Borneo's crocodile-infested mangrove swamps.

Ed flies to Kazakhstan to take on ex-South Korean special forces soldier KhenRhee, where he encounters life-threatening navigation errors.

Ed Stafford heads to the deadly Gobi desert with endurance athlete Matt Graham, where the pair face sand storms and extreme dehydration.

Ed races through northern Thailand against ex-military survival legend EJ Snyder, but the competition almost takes a fatal turn when one of them tumbles off a cliff.

Ed races primitive skills expert Cat Bigney across the deadly island paradise of Palau in the South Pacific, home to sharks and salt water crocodile.

Ed races Royal Air Force survival instructor John Hudson across the top of the monster mountains of the Himalayas. Monsoon rains and lethal bears are among its dangers.

Ed faces his old bushcraft teacher, Will Lord, in Bashan, central China. Both without a knife, they must navigate huge cliffs and Asia's largest bamboo forest.

Ed faces former French Foreign Legion desert specialist, Xinlei Wu, in the Aksai Desert of north-west China. They encounter huge sand dunes and rock-valley mazes.

Ed takes on the 'Kiwi bushman', Josh James, in the Three Parallel Rivers plateau of Yunnan Province. Josh draws on his Maori-heritage to make fire in the mountains.

Ed takes on ex-PSYOPS marine and real-life ninja, Hakim Isler, in the Zoige Marshes of Sichuan Province. The unforgiving wetland tests their willpower to the max.

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Ed Stafford challenges endurance athlete Matt Graham to a rematch in the cold and brutal highlands of Scotland

A former US Marine intelligence officer and primitive skills expert, Donny Dust, joins Ed Stafford in a race across the wild and unforgiving Amazon jungle.

Ed Stafford will risk his life in scorching hot north Kenya in the volcanic barrier to compete against Max Djenohan, a young, elite survivalist who's out to prove he has what it takes to match the best.

Ed Stafford tests his body's ultimate limits as he races against medic and ultra-marathon runner Sun Lingye across the mountains of Taiwan.

For the first time, Ed Stafford will compete against two challengers, Amber and Serena Shine, in Kenya's Rift Valley, where they will encounter lions, African elephants, hippos, crocodiles and bull elephants blocking their paths.

Ed Stafford goes up against his son's godmother, Ness Knight, a renowned explorer and survival specialist, across the deadly Valley of the Gods.

This special behind the scenes episode reveals how Ed Stafford's quest for constant improvement is a lifelong endeavor, aiming to redeem himself and come to terms with the man he's become through the course of the great adventure that is First Man Out.