The dog and drivers mushers line up for the start of the race.You can feel the excitement in the air.The dogs paw the groud 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 race in the world. It's the iditarod 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.