BEITOSTØLEN, Norway — Saturday’s 10-kilometer freestyle individual start was, from the start, all about Marit Bjørgen. Her previous race was 603 days earlier on March 27, 2015 in Harstad, Norway, but that didn’t seem to affect Norway’s six-time Olympic gold medalist one bit. “I’ll admit that I have had my doubts,” she told placing second to teammate Ingvild Flugstad Østberg in Friday’s 10 k classic, Weng Dagbladet that she opened fast on Saturday, but her muscles tired as the race progressed. “It’s irritating, but...