Ultra Extremes

Prepare for the ultimate endurance adventure with Ultra Extremes, the podcast that takes you to Earth's most brutal ultra-marathons where ordinary humans achieve the extraordinary. Join AI host Ollie Bennett as he guides you through frozen Arctic wastelands, scorching Sahara deserts, oxygen-starved mountain peaks, dense jungles, and multi-terrain nightmares that test every limit of human capability. Discover the science behind extreme adaptation, meet legendary athletes who've redefined possible,

Ascend to the world's most spectacular and dangerous high-altitude ultra-marathons, from the legendary Ultra-Trail du Mont-Blanc to races in the Himalayas above 17,000 feet. Discover how elite mountain runners like Kilian Jornet and Courtney Dauwalter navigate technical terrain where one wrong step means a thousand-foot fall, all while their bodies struggle with oxygen levels that would incapacitate most people. Learn about altitude adaptation, the specialized skills needed for technical scrambling,

Venture into the scorching sands of the Sahara Desert and the world's most brutal heat-based endurance challenges. Explore the Marathon des Sables, where runners cover 156 miles over six days while carrying everything they need to survive, and discover how the human body adapts to temperatures exceeding 120°F. Learn about the critical science of hydration management, the gear innovations that prevent heat stroke, and the mental strategies that keep runners moving when mirages fool the mind. Meet

Journey into the frozen extremes of human endurance as Ollie explores ultra-marathons in Arctic and Polar regions. From the 1,000-mile Iditarod Trail Invitational to the 6633 Arctic Ultra, discover how runners battle temperatures below -40°F while carrying survival gear across Alaska and Canada's most remote wilderness. Learn about the science of cold adaptation, the gear that keeps people alive, and the psychological strategies needed when hallucinations become common and every step could be your