Note: This article has been updated to include American Rosie Brennan’s result. *** There are several different ways to describe Lillehammer’s 5-kilometer freestyle course, complete with at least five notable climbs, one of which takes a World Cup skier about 3 1/2 minutes to conquer. “Fun” isn’t the word most would use, but most aren’t Jessie Diggins. A 25-year-old member of the U.S. Ski Team from Afton, Minn., Diggins rounded the one-lap course with a speed no...