The Iron Dog Snowmobile race in Alaska is the Daytona 500 of off trail snowmobile racing. There is no trail, no gas station, its put in a GPS point and ride from point to point. The Pro Class consists of 2100 miles of cross country racing through Alaska's vast terrain of deep snow, rocks, down trees, mud, ice, and open water. In 2013 half of the teams that entered did not finish. A team of two riders with two sleds will enter and must race and finish as a team.