Dean Karnazes born Constantine Karnazes; August 23, 1962, is an American ultra-marathon runner, and author of Ultramarathon Man: Confessions of an All-Night Runner, which details ultra endurance running. Karnazes has completed a plethora of endurance events, most notable achievements include: Ran 350 miles (560 km) in 80 hours and 44 minutes without sleep in 2005. Single-handedly completed "The Relay", a 199-mile (320 km) run from Calistoga to Santa Cruz, eleven times Ran a marathon to the South Pole in −13 °F (−25 °C) temperatures without snowshoes in 2002 Ran a marathon in each of the 50 states in 50 consecutive days in 2006 Other athletic achievements include: Winner (male), Badwater Ultramarathon (135 miles (217 km) across Death Valley in 120 °F (49 °C) temperatures), 2004 (with five other top-10 finishes from 2000-2008) Winner, Vermont Trail 100 Mile Endurance Run, 2006 Overall Winner, 4 Deserts Race Series, 2008 American Ultrarunning Team, World Championships, 2005, 2008 148 miles (238 km) in 24 hours on a treadmill, 2004 Eleven-time 100-Mile/1 Day Silver Buckleholder at the Western States Endurance Run Ran 3,000 miles (4,800 km) across the United States from Disneyland to New York City in 75 days, running 40 to 50 miles (65 to 80 km) per day, 2011 Other honors include: Competitor magazine Endurance Athlete of the Year Award winner, 2008, 2006, 2005 ESPN ESPY Award winner, "Best Outdoor Athlete", 2007 Men's Journal, Adventure Hall of Fame, 2007 Outside magazine, Ultimate Top 10 Outdoor Athletes, 2004 First recorded in 2012 Episode 0h 38m 46s Talk Ultra back catalogue HERE --- Send in a voice message: https://anchor.fm/theinterviews-talkultra/message