The world's most adventurous athletes

Two friends attempt to cross the Alaska Range mountains in an extreme paragliding expedition.

Testing an ancient myth, two sea kayakers attempt to paddle the 1,930km between Greenland and Scotland.

A young cave-diver looks to earn a place in history by plumbing the depths of an unexplored cave in Indonesia.

A group of friends attempt to cross the dangerous waters of the Torres and Bass Straits in wooden canoes.

Explorer Ness Knight takes on her most challenging adventure to date, a solo fat bike trek across Namibia.

A team of adventurers undertakes a first-ever kite skiing and kayaking mission across Greenland.

A team of scientists and climbers descend into a volcano to get as close as possible to an active lava lake.

A former champion kite surfer attempts to ride to the 12 islands of his home country, Cape Verde.

Watch the mission to stand up paddle board down the Rio Marañón, the source of the Amazon River.

Ben Stookesberry and a group of kayakers attempt a first descent of the Beriman River in Papua New Guinea.

Two paragliders ride thermal winds with Andean condors from sea level up to the peaks of the Andes mountains.

A group of intrepid professional skiers risk it all to ski the remote and desolate Pacific island of Onekotan.

David Lama attempts to be the first person to free climb Cerro Torre, the mountain that changed his life.

Felix Baumgartner attempts a world record-setting 36,500m freefall from the edge of the stratosphere.

South African kayaker and adventurer Steve Fisher plans one of the riskiest projects of his career.

In Japan, Irish marathon swimmer Stephen Redmond tries to become the first person to swim the Oceans Seven.

Mountain climbers climb the first redpoint team free ascent of Mount Asgard on Baffin Island, Canada.

A team of professional big wave surfers travels far up the Amazon River to surf a fabled tidal wave.

Watch slow-motion footage captured in Norway, with snow-covered peaks prime for skiing and snowboarding.

Kayakers Ben Brown and Rush Sturges attempt to tackle a daunting river flow in beautiful New Zealand.

From the highest peaks to the deepest snow, these skiers redefine adventure on the mountains.

It's 'mission impossible' for a pair of freeskiers who attempt to ski the highest peak in Eastern Siberia.

Kurt Sorge braves ash-laden conditions in Indonesia and as he descends, Mount Bromo erupts in the distance.

A group of intrepid professional skiers risk it all to ski the remote and desolate Pacific island of Onekotan.

Watch slow-motion footage capturing Chile's blue skies, powerful waves and unbelievable mountains.

Watch slow-motion footage captured in stunning Bavaria and Austria – see the mountains peaks and ski towns.

Two paragliders ride thermal winds with Andean condors from sea level up to the peaks of the Andes mountains.

The documentary follows Will Gadd’s efforts to ice climb the disappearing glaciers on Africa’s highest peak.