World's Most Extreme Races

Some races require strength, stamina and mental grit. Others? Well -- only a good sense of humor and a love for the bizarre. From dog-sledding challenges and icy ultramarathons to zombie obstacle courses and rickshaw runs, we highlight some of the wildest, weirdest, most physically demanding races around the world, both the hard-core to the hilarious.

Text by Julia Dimon | Photo editing by Connie Ricca

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VIDEO ON MSN LOCAL EDITION

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WHAT DO YOU THINK?

Which of these extreme outdoor sports would you be brave enough to try?

Which of these extreme outdoor sports would you be brave enough to try?

  1.  
    47 %
    BASE jumping
    26,853 votes
  2.  
    23 %
    Ice climbing
    13,429 votes
  3.  
    30 %
    Parkour
    16,856 votes

Total Responses: 57,138
Not scientifically valid. Results are updated every minute.