Karl Meltzer: Made to Be Broken

as Self

Ultrarunner Karl Meltzer has long dreamed of setting the speed record for crossing America's...

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Red Bull Human Express

as Himself

In 2010, ultramarathoner Karl Meltzer embarked on his attempt to run the Pony Express route,...

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Defeated Dreams

as Himself

An inside look at Scott Jurek's 2021 attempt at breaking the Appalachian Trail speed record.

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