Anna Berington finished Alaska’s grueling Iditarod sled dog race 43 seconds ahead of her sister, and that was fitting, because she’s been five minutes behind her twin since birth.Growing up in northern Wisconsin, Anna and Kristy Berington underwent the perfect training for the world’s premier sled dog race. Brutal cold, piles of snow and howling winds are just another winter day for folks in Port Wing on the frigid shore of Lake Superior.They’re the only twins and only sisters to compete in the historic 1,100-mile Iditarod. Last year, Kristy’s third Iditarod and Anna’s first, the identical twins held hands as they crossed the finish line in Nome. But because Anna had a longer lead rope on her dogs, she was recorded as crossing first.Read more here: http://www.jsonline.com/news/wisconsin/twins-from-wisconsin-take-on-the-iditarod-dog-sleddings-premiere-race-qv8o6d6-191610041.html