Most of the time, the FIS Cross-Country World Cup visits towns and ski trails the racers already know well. Some venues, like Norway’s Holmenkollen and Switzerland’s Davos, are visited every year. Others, like France’s La Clusaz, are on the schedule every few years but are still always popular. “I’ve been on the World Cup for ten or eleven years, and we go to the same venues all the time,” the U.S. Ski Team’s Liz Stephen said....