Our guest this week is a bona fide endurance running legend. He’s raced through Death Valley, run 350 miles without stopping, and once completed 50 marathons in 50 US states in 50 days. But even Dean Karnazes can’t outrun father time, and in his latest book, A Runner’s High, he boldly confronts the prospect of getting older and slower. We’re delighted – and a little starstruck – to have him on the podcast. Pre-order A Runner's High here. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.