This happened after his victory in the mass start at the 50 km classic style in Oslo.
Bolshunov scored 1293 points for two distance starts before the end of the season. His closest pursuer in this discipline, Shur Rete, is 429 points behind and will no longer be able to catch up with the Russian.
Earlier it was reported that Bolshunov won the marathon at the KM stage in cross-country skiing in Norway.