Before the season, Fis decided that men and women would ride the same distances in the World Cup, 10, 20 and 50 km.
During the premiere weekend in Ruka, Finland, at the end of November, the distance races were therefore for the first time the same length for everyone, regardless of gender.
But at the WC you go to the old distances, for example the ladies finish with three miles and the men with five miles.
The reason is simple: Fis wants to test, and then evaluate, the new distances in the World Cup before they are also implemented in championships.
Hear how the Swedish stars reason about the distances in the player above.