Repnizyna has mainly participated in the cross-country skiing Eastern Europe Cup since the 2010/11 season . In November 2013 she achieved a podium finish for the first time in Vershina Tjoi with third place over 10 km freestyle. In December 2013 she started at the Winter Universiade 2013 in Lago di Tesero , where she won the bronze medal in the sprint. At the beginning of the 2014/15 season, she achieved another podium finish in the Eastern Europe Cup with third place in the sprint in Werschina Tjoi. In December 2014 she made her debut in the World Cup at the Nordic Opening in Lillehammer , which she finished in 47th overall. In January 2015 she got her first World Cup points in Rybinsk with places 29, 26 and 17. At the 2015 Nordic World Ski Championships in Falun , she came 53rd over 10 km freestyle. At the beginning of the following season she finished third in the 10 km freestyle at the Eastern Europe Cup in Vershina Tjoi. At the Tour de Ski 2016 she came in 43rd place. After third place in the sprint at the Eastern Europe Cup in Vershina Tjoi, she won the relay gold medal at the 2017 Winter Universiade in Almaty . At the end of March 2017, she became the Russian skiathlon champion in Khanty-Mansiysk .