Ed Stafford: First Man Out, Kazakhstan

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.