New York Times bestselling author and ultramarathoning legend Dean Karnazes has pushed his body and mind to inconceivable limits, from running in the shoe-melting heat of Death Valley to the lung-freezing cold of the South Pole. He’s raced and competed globally and once ran 50 marathons, in 50 states, in 50 consecutive days.

A Runner’s High, Karnazes chronicles his extraordinary adventures leading up to his return to the Western States 100-Mile Endurance Run in his mid-fifties after first completing the race decades ago. The Western States, infamous for its rugged terrain and extreme temperatures, have become the most demanding competition in Karnazes’s life, a physical and emotional reckoning and a battle to stay true to one’s purpose. Confronting his age, his career path, and his life choices, we see Karnazes as we never have before.

For Karnazes, the experience of running centers on the runner and the trail. It is not merely about accumulating achievements; rather, it is a story that unfolds with each step taken every day. "A Runner's High" is an endorphin-fueled adventure and a heartfelt tribute to the sport from one of its most celebrated ambassadors. This work will resonate with both casual and serious runners, leaving them inspired and cheering. with both casual and serious runners, leaving them inspired and cheering.