Heidi Weng is a Norwegian cross-country skier and fell runner.

The FIS Cross-Country World Cup is an annual cross-country skiing competition, arranged by the International Ski Federation (FIS) since 1981. The competition was arranged unofficially between 1973 and 1981, although it received provisional recognition on the 31st FIS Congress, 29–30 April 1977 in Bariloche, Argentina.