Kim started the World Cup for the first time in Calgary at the beginning of the 2018/19 season and finished tenth over 1000 m and third over 500 m. In the further course of the season he won over 1500 m each in Almaty , Dresden and Turin and also took second place over 1500 m in Almaty and second place over 500 m with the mixed relay and in Turin. At the end of the season he won the 1500 m World Cup and finished seventh in the 500 m World Cup.
Note: This article places the family name before the person's first name. This is the usual order in Korean. Kim is the family name here, Gun-woo is the first name.