No crowds. No sunlight. Just headlamps, silence, and 42 kilometers carved into the belly of the Earth. Claire didn’t just run a marathon—she ran into a world record, deep underground in the planet’s deepest race. In this episode, we follow her journey from the iconic streets of London to the shadowy tunnels of a mine, where every step echoed with grit, wonder, and the thrill of doing something no one else had. This is not just a race story—it’s a descent into what’s possible when you chase the extraordinary.