Inside the Pain Cave With Ultrarunning GOAT Courtney Dauwalter - The Ringerhttps://www.theringer.com/sports/2022/8/30/23323367/courtney-dauwalter-ultra-running-marathon
For the world’s greatest ultrarunner, mental toughness is just as important as physical strength. "It’s not always going to feel great, but that’s going to make us better."