You’ve probably heard the news by now: Marit Bjørgen, the Norwegian queen of cross-country skiing, has decided to retire. The 38 year old made the announcement a week ago after winning the first race of Norwegian nationals, the 5-kilometer classic, on April 6. “In reality it has been a long process,” she told NRK that day, according to a translation. “I had almost decided before the competitive season started. I feel that I lack the...