Training to swim, bike and run around the world

A few weeks ago we posted a story about a kayaker who is in the midst of circumnavigating the globe, solely by human power.  In another test of extreme endurance, a British teacher named Dan Martin will be embarking on a global triathlon in May.  He aims to swim the Atlantic Ocean, cycle across Europe and run through Canada all in the span of 18 months.

Unrelated, but also incredible, is this video of a surfer who almost collides with a photographers helicopter while surfing huge waves in Hawaii.