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 Ken Rhee. He encounters dangers such as wolves and life-threatening navigation errors.

Ed Stafford is paired against survival supremo and famed endurance athlete Matt Graham. He climbs into the deadly Gobi Desert, facing sand storms and extreme dehydration.

Ed races through the harsh jungles of northern Thailand against ex-military survival legend EJ Snyder. It's almost fatal as one competitor tumbles off a cliff.

Ed is up against primitive skills expert Cat Bigney in a race across the deadly island paradise of Palau in the South Pacific – home to sharks and saltwater crocodiles.

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 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 Hollywood stuntwoman, Ky Furneaux, in the Four Girls Mountain Range. How will they survive in its icy valleys and snow-covered peaks?

Ed challenges Matt 'The Juggernaut' Wright, in the Wanshan Archipelago off the coast of southern China. They race to build rafts as storms roar in.

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.

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 Stafford challenges endurance athlete Matt Graham to a rematch in Scotland's cold and brutal highlands. They must endure freezing conditions to make it to Ben Nevis.

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

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 risks his life in North Kenya's scorching hot volcanic barrier to compete against Max Djenohan, a young, elite survivalist determined to prove he's the best.

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

Ed Stafford competes against two challengers, Amber and Serena Shine, in Kenya's Rift Valley where they discover all sorts of wild animals blocking their path.

Ed Stafford competes against two challengers, Amber and Serena Shine, in Kenya's Rift Valley where they discover all sorts of wild animals blocking their path.

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

Featuring exclusively shot footage, Ed and the team reveal the strenuous journey they must endure from the show's beginning to end.