The dogs and drivers (mushers) line up for the race.You can feel the excitement in the air. The dogs paw the ground anxious to be off,while the mushers make last minute preparations for the long trek ahead. The onlookers cheer and encourage them. This sled race is known internationally to be one of the longest and toughest sled races in the the world.It's the lditarod Trail Sled Dog Race in alaska , USA.It has become very popular over the years with over 65 teams taking part from Alaska as well as many other countries.