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30 films
A 3.9 km swim, 180 km bike ride, and 42.2 km run comprise the first long-distance triathlon held in Antarctica, testing athletes' endurance.
Runners at the back of the pack in the Cocodona 250 ultramarathon showcase perseverance and community as they push their limits against the clock.
Jim Alder, the reigning Commonwealth Games champion, shares his intense mental and physical relationship with marathon running and the pain it entails.
Temperatures in the polar regions can drop as low as -120°F, creating one of the harshest environments for wildlife on Earth.
Twelve-year-old Wario of the Borana tribe faces a life-changing rite of passage, navigating the perilous salt trade in Ethiopia's harsh landscape.
A team sails over 3,000 miles through the Drake Passage and sub-Antarctic islands, retracing Ernest Shackleton's historic expedition route.
Kearsarge Pass rises to 11,845 feet in the Sierra Nevada, presenting significant challenges for Bob Coomber as he attempts to hike it in a wheelchair.
In Oymyakon, Siberia, 8-year-old Aljosha navigates daily life in the coldest inhabited place on Earth, facing extreme temperatures and survival challenges.
Mountain races challenge participants to traverse stunning, remote landscapes, revealing the motivations behind ultra-distance bikepacking adventures.
Every year, millions of wildebeest, zebras, and other animals traverse the Serengeti and Maasai Mara, facing predators and harsh landscapes in search of survival.
Last remaining mountain porters of the High Tatras carry over 100 kilos through harsh conditions, embodying resilience and the enduring spirit of tradition.
Real people share their experiences of alien abductions and paranormal sightings, revealing the profound impact these events have had on their lives.
Kim Greisen battles through a broken leg to complete 30 Ironman triathlons in 30 days.
Royal Marine recruits Dom and Kane face intense challenges during the world's toughest infantry training, revealing the mental strength needed to earn the green beret.
Athletes face the vast landscape of Interlaken in this episode of Wild Racers in Switzerland.
Sunken whale carcasses and uprooted trees create unique ecosystems on the ocean floor, supporting diverse biological communities in deep-sea environments.
In March 2022, the Endurance shipwreck, captained by Ernest Shackleton during the 1914-1917 expedition, was found in the Weddell Sea, showcasing its excellent preservation.
Reynolds imagines the moment of freedom, questioning if people cried out for lost loved ones and if they danced and sang jubilee songs.
Lauro makes a tough choice for his Iditarod race, highlighting the challenges of competition.
A piece of equipment that has not been serviced by human hands in over 10 years is still working on Mars, continuing to send back scientific data.
Hannah Gavios completes the New York City Marathon in over 11 hours using crutches after a spinal cord injury left her partially paralyzed.
Conrad Anker and Jimmy Chin discuss climbing the Himalayan Giants on September 5.
The Endurance, Ernest Shackleton's lost ship, was found after 107 years at a depth of 3,000 meters beneath the Antarctic sea ice, remarkably preserved.
An all-female German team competes in the Talisker Atlantic Challenge, a grueling 4,800-kilometer rowing race across the ocean lasting 40 days.
The Sauna Championships in Finland showcase extreme heat and The Finns' endurance in competition.
A scientist in Denmark studies the effects of prolonged standing, linking it to crucifixion.
Teams face the most debilitating conditions in the Adventure Challenge on New Zealand's south west coast.
The lead teams push so hard that they lead by an entire leg in the intense race.
Extreme racing in South Africa tests competitors' physical and mental limits as they navigate demanding conditions in the country's harsh landscapes.
Elite teams in the Wild Racers competition navigate treacherous terrain and harsh weather in the Swiss Alps, testing their endurance and strategy.
