Top 10 Toughest Races in the World

The National Geographic Adventure blog has just published their list of the Top 10 Toughest Races in the world. The races include a number of disciplines, here’s a summary (in reverse order):

  1. TheĀ Iditarod Trail Sled Dog Race
  2. World Bog Snorkeling Championships
  3. Furnace Creek 508
  4. Arrowhead 135-mile Winter Ultramarathon
  5. Manhattan Island Marathon Swim
  6. Barkley Marathon
  7. Extreme Winter Ultra Marathon
  8. Marathon des Sables
  9. Race Across America
  10. *** (we don’t want to spoil the surprise….to find out read the full article on the National Geographic website)
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