When she feels as if she is running on shards of glass, when her legs feel like they are about to split open, when she thinks she can’t possibly run one more mile, Courtney Dauwalter starts visualizing the pain cave. It’s a place she constructs in her mind with elaborate detail. She conjures every crevice of the cave’s architecture: a large space with different tunnels inside. The cavernous paths in her mind can be wide or narrow, depending on the length and duration of the race. But with Courtney, they’re usually impossibly long. Dauwalter, 37, is considered the world’s best female ultramarathon runner. She might just be the greatest ultrarunner of all time, period. She races astonishing distances of 100- and 200-plus miles, even once attempting a 486-mile course. She is often on her feet for a mind-bending 24 or 48 straight hours, in the harshest environments imaginable, from steep terrain and high elevation to extreme weather.
Each race, she intends to go into the pain cave. She almost craves it. She warns herself, standing at the start line right before the gun goes off, that she is about to embark on another uncomfortable journey to the cave. “It’s not always going to feel great,” she tells herself. “But that’s going to make us better. We’re going to get better from visiting it.”