The Iditarod Trail Invitational is quite possibly the hardest race in the world. It features athletes who run, ski, and mountain bike along the same 1000-mile (1600 km) long trail that the famous sled dog race follows on its way from Anchorage to Nome. The IDI takes place in the dead of winter as well, which adds just another challenge to this tough ultra-endurance event. Many try to complete it each year, few succeed.
Just how do you train for such an event? Check out the video below, which comes our way via EpicTV, and marks the start of a new series entitled Sport & Survival.
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