Mazokina started in Vershina Tjoi in November 2014 for the first time in the Eastern Europe Cup and finished 105th and 74th in the sprint and 117th place over 5 km freestyle. At the Nordic Junior World Ski Championships in Goms in 2018 , she won the silver medal with the relay. In addition, she achieved 18th place over 5 km classic and 12th place in the sprint. In the 2018/19 season she achieved four top ten placings, including second place in the sprint in Syktywkar , seventh place in the overall ranking of the Eastern Europe Cup. In January 2019 she started the World Cup in Dresden for the first time and finished 31st in the sprint and 12th in the team sprint. In the same month she won 31st place in the sprint at the U23 World Championships in Lahti . At the Winter Universiade 2019 in Krasnoyarsk , she won the silver medal in the sprint and, together with Alexander Terentjew, the gold medal in the team sprint. After finishing third in the sprint at the Eastern Europe Cup in Shchuchinsk at the beginning of the 2019/20 season, she took second place in the sprint in Vershina Tjoi and won her first race in the Eastern Europe Cup there in the sprint. It took third place in the overall ranking of the Eastern Europe Cup. In December 2019 she got her first World Cup points in Planica with 18th place in the sprint. At the U23 World Championships 2020 in Oberwiesenthal , she won the silver medal with the relay. In addition, she was seventh in the sprint and fifth in the 10 km classic.
Russia
