Ultra-Endurance Races and Triathlons

The 12 Hardest Races in the World

Some of the most beautiful travel destinations in the world are also home to some of the most sadistic running, cycling and triathlon events ever created

By Jason Sumner fitbie

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The 12 Hardest Races in the World // The hardest cycling, biking and running races c Courtesy Trans Pyr

Image: Courtesy Trans Pyr

Pushing It to the Limit

Running a marathon or cycling a 100-mile century is enough to test the mettle of your average weekend warrior. But some amateurs take it to another level. They run 100 miles at high altitude. They ride their bikes through the jungle from the Pacific Ocean to the Caribbean Sea. Some swim 2.4 miles, bike 112 miles, and run 26.2 miles-all in the same day. Read on to discover 12 events like these that push even the strongest, most determined athletes far outside their comfort zones, to a place where mental fortitude is just as important as physical fitness. (Search: Find a challenging race in your neighborhood).

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The 12 Hardest Races in the World

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