Ultramarathon Man Dean Karnazes on Achieving a ‘Runner’s High’

Dean Karnazes once ran 50 marathons in 50 states in 50 days. That was in 2006, not long after his memoir “Ultramarathon Man: Confessions of an All-Night Runner” became a national bestseller. His new book, "A Runner’s High: My Life in Motion," charts Karnazes’ return to the Western States 100-Mile Endurance Run in his mid-50s. Once named one of the most influential people in the world by Time Magazine and a winner of the Badwater Ultramarathon and 4 Deserts Ultramarathon Series, Karnazes has a unique insight into the power and physicality of running. The “Ultramarathon Man” joins us to discuss what it means to achieve a runner’s high.

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