The bad weather condition and very low temperature, force the event organizers rescheduled some races.
So, individual races has been cut to 15km for the men, and 12,5 km for the women. Also, they changed the schedule, because very coldy expected on Sunday. Forecast promise about -30°C (-22 °F) in 4 days.
IBU has a rule - all races prohibited by temperature under -20°C. So, some races can be canceled.