In competition in Salt Lake City of 2017–18 ISU Speed Skating World Cup, she with Nana & Ayano Sato won women's team pursuit with the world record of 2 minutes & 50.87 seconds.

[1] She won the women's competition at the 2018 World Allround Speed Skating Championships.

Takagi set a world record in the women's 1500 meters in 2019 with a time of 1:49.83 in Salt Lake City, Utah.

[2] At 2022 Winter Olympics, Takagi earned three silver medals in 1500m, 500m, and team pursuit.

At the 2025 Calgary Speed Skating World Cup, Takagi won the individual 1000m event, bringing her tally of wins at champion and Olympic level events to 34, tying for the most overall wins by a Japanese athlete.