This month, more than 50 teams are set to compete in the Iditarod Trail Sled Dog Race, a 1,000-mile trek across Alaska. To gain entry, mushers must participate in three shorter qualifying races, including the Kuskokwim-300, a 300-mile competition that kicked off in southwest Alaska on January 18. Here are four entrepreneurial companies that make the race possible.Read more here: http://www.inc.com/behind-the-scenes-entrepreneurs-who-keep-the-iditarod-mushing.html
