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.

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

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

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

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

A group of the world's best kayakers journeys to Iceland and Norway in search of unexplored rapids to run.

Follow kayaker Nouria Newman's vlog as she embarks on a treacherous solo expedition in the Himalayas.

Follow the journey of pro stand-up paddle athlete Casper Steinfath as he paddles from Denmark to Norway.

Adventurous camerman Geoff Mackley braves sub-zero temperatures in Siberia to test a remarkable water effect.

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