If you have ever ruptured an achilles, you will understand just how monumental this achievement is.
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US hurdler Shelby Erdahl tore her achilles moments into her 400m hurdles race at the Big Sky Outdoor Conference Championships.
But instead of pulling up short and not making the finish line, Erdahl powered on to finish the race in the most inspiring manner.
Watch Erdahl's incredible race in the video at the top of the page.