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Dean Karnazes Runs 5 marathons in 24 Hours!

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Uploaded by on Jun 22, 2007

The official first day of summer got off to a running start in the heart of New York City when the Ultramarathonman Dean Karnazes braved one of the greatest tests of endurance in history. With the support of Accelerade, a new protein-enhanced sports drink, Dean ran almost 5 marathons in 24 hours! And he did it all on a treadmill suspended high above Times Square. To see highlights from this 24 hour endurance run visit www.accelerade.com

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  • runners don't run away from problems, they run with them and then take then on with a well thought out plan!

  • this guy is a hero to me and all those monsters of endurance who like to take it to the next level.

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  • he rocks. tho I wonder if he suffers from manic depression considering how many people naturally can go 24 exercising non stop without sleep. ouch! he truly is a human dynamo, I just hope he doesn't burn himself out.

  • shit that is over 130 miles in a day!.

  • much respect to this guy, but dam, it must've been super boring running in place for 24 hours

  • @BurntLaces what is?

  • gstar8425 is right, the guy has superendurance because of his lactic acid abnormality, which means every next hour of run is not harder but easier for him he can run even faster, but this whole talk about proteins in diet bla bla bla is bullcrap.

  • Incredible athlete and an amazing person. Go Dean!

  • how is that possible??

  • proven to be fake

  • How fast is he going you ask? A hell of a lot faster than you would be going during your second, third, fourth, and fifth marathon in a row.

  • why are ppl hating on this guy so much? Who cares if he's not the flash at running. Who else has his same endurance? In fact anybody who saw the history channel could see this guy could litterally run forever if he could. Biologically speaking the latic acid that makes us fatigued increases while his decreases meaning he could actually run faster if he wanted to.

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