Ultrarunners take on North America

Not content with a normal marathon across 42km, the ultrarunners yearn for something bigger and more testing.

    Most runners would consider finishing a marathon as an accomplishment, but for a select group 42km just isn’t enough.

    They're known as ultrarunners.

    Al Jazeera’s Kristen Saloomey met up with Ireland's Richard Donovan, who's just run all the way across North America.

    SOURCE: Al Jazeera


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