Mironova made her World Cup debut in the 2016-17 season in Pyeongchang, finishing 64th in the sprint held on 2 March 2017.[1]
In the 2017-18 season, Mironova took part in seven out of nine stages. Her best result was 9th in the Hochfilzen sprint.[2] By the end of the season, she was named rookie of the year by the International Biathlon Union.[3]
Mironova made to her first World Cup podium at 13 December 2019 in the sprint race in Hochfilzen.[4] She also finished 2nd at the same stage in the women's relay.
On 10 January 2021, Mironova played an instrumental part in the Russian mixed relay gold medal (alongside Uliana Kaisheva, Alexander Loginov and Eduard Latypov) at the World Cup in Oberhof, ending the anti-record 43-race podiumless streak for the Russian biathletes.[5]