Takagi achieved her first international successes at the Junior World Championships 2010 in Moscow and 2012 in Obihiro . She won the silver medal in the all-around competition. In October 2013 she became Japanese champion over 3000 m. She ran her first world cup in November 2013 in Calgary . There she finished tenth in the individual races over 3000 m and fourth place over 1500 m in Division B. In the team pursuit, she achieved her first podium finish with second place. At the 2014 Winter Olympics in Sochi , she came 32nd in the 1500 m and fourth in the team pursuit. At the World Cup final in Berlin she came back on the podium with third place in the team pursuit. At the beginning of the 2014/15 season, she was Japanese champion over 3000 m, 1500 m and four-way championship. At the first World Cup of the season in Obihiro, she finished second in the mass start and in the team pursuit. In the further course of the season she reached third place in the team pursuit at the World Cup in Berlin and second place in the mass start in Erfurt . At the 2015 World Speed Skating Single Distance Championships in Heerenveen , she won the gold medal in the team pursuit. She finished the season in fourth place in the Mass Start World Cup. In the 2015/16 season she won her first World Cup in the team pursuit with two wins in Heerenveen and one win in Inzell . At the 2016 World Speed Skating Individual Distance Championships in Kolomna , she was tenth over 5000 m and won the silver medal in the team pursuit. In the following season she won the team pursuit in Astana , Heerenveen and Stavanger . She also took second place in the team pursuit in Nagano and second in the mass start in Astana. At the 2017 World Speed Skating Individual Distance Championships in Gangwon , she won the silver medal in the mass start and team pursuit, and the bronze medal in the 1500 m and the gold medal in the team pursuit at the Winter Asian Games 2017 in Obihiro. Also in the 2017/18 season she won three World Cup victories in the team pursuit. In Calgary she finished third in the mass start. At the highlight of the season, the 2018 Winter Olympics in Pyeongchang , she won the gold medal in the mass start and in the team pursuit. In the run over 5000 m she came in 12th place.
In the 2018/19 season, Takagi won three times in the team pursuit and twice in the mass start and thus achieved fifth place in the mass start World Cup. At the individual distance world championships in Inzell in 2019 , she won the gold medal in the team pursuit. In addition, she ran there on the 16th place over 3000 m, on the 15th place in the mass start and on the 13th place over 1500 m. At the beginning of March 2019 she came 11th at the all- around world championships in Calgary .
Personal bests
500 m 38.67 sec. (installed on March 2, 2019 in Calgary)
1000 m 1: 15.08 min. (installed on February 7, 2020 in Calgary)
1500 m 1: 52.72 min. (installed on February 16, 2020 in Salt Lake City)
3000 m 4: 03.25 min. (installed on December 10, 2017 in Salt Lake City)
5000 m 7: 08.77 min. (installed on November 19, 2017 in Stavanger)
Participation in World Championships and Olympic Winter Games
Olympic games
2014 Sochi : 4th place team pursuit, 32nd place 1500 m
2018 Pyeongchang : 1st place team pursuit, 1st place mass start, 12th place 5000 m
Individual distance world championships
2015 Heerenveen : 1st place team pursuit, 13th place mass start, 15th place 1500 m, 18th place 3000 m
2016 Kolomna : 2nd place team pursuit, 10th place 5000 m
2017 Gangwon : 2nd place team pursuit, 2nd place mass start
2019 Inzell : 1st place team pursuit, 13th place 1500 m, 15th place mass start, 16th place 3000 m
2020 Salt Lake City : 1st place team pursuit, 5th place mass start, 8th place 1500 m
Japan
Heerenveen
Inzell
Astana
Stavanger
Calgary
Salt Lake City
Tomaszów Mazowiecki