North Pole marathon
Media playback is unsupported on your device

North Pole marathon challenges runners

Runners who find the considerable challenge of competing a marathon distance too easy have competed with the extra tests of sub-zero temperatures, soft snow, and the risk from polar bears.

The North Pole marathon saw 47 competitors brave the conditions, as Alpa Patel reports.

  • 12 Apr 2014
Go to next video: Canada embarks on North Pole claim