64: The Hardest Human Alive, Ultra Runner

Navy SEAL and endurance athlete, David Goggins, joins the Finding Mastery podcast to share his quest to become the hardest human alive.

Inside the Pain Cave With Ultrarunning GOAT Courtney Dauwalter - The Ringer

The World's Oldest Ultramarathon Runner Is Racing against Death. : r/running

David Goggins Biography & News, Runner

World's Toughest Horse Race Retraces Genghis Khan's Postal Route

How Ultrarunner Camille Herron Set Another World Record - The New York Times

Parkrun saved my life': how the weekly runs became a phenomenon – and are now coming back, Health & wellbeing

Fitness challenges for the new year: long walks, steep hikes - Los Angeles Times

David Goggins: How To Become The Toughest Man Alive

Discover the World's Toughest Ultramarathons

I ran an ultramarathon in the hottest place on Earth

Terry Fox - Wikipedia

Dean Karnazes: The Man Who Can Run Forever

The Marathon des Sables is the world's toughest race. This man veered 291km off course — and survived - ABC News