| 43.85 | 13 | 10th Kushiro Final Atlethic Meet | 22. - 23.02.2014 | Kushiro (JPN) |
| 43.88 | 15 | 53 East Hokkaido Competition | 25.01.2014 | Nemuro (JPN) |
| 44.04 | 16 | 39th Akan Junior Competition / 21th Akan Junior Sprint Championships | 09. - 10.01.2014 | Akan (JPN) |
| 44.16 | 16 | 39th Akan Junior Competition / 21th Akan Junior Sprint Championships | 09. - 10.01.2014 | Akan (JPN) |
| 43.63 | 49 | 2nd Time Trial | 19.10.2013 | Obihiro (JPN) |
| 43.28 | 70 | 1st Time Trial | 14.09.2013 | Obihiro (JPN) |
| 43.75 | 11 | 10th Kushiro Final Meet | 23. - 24.02.2013 | Kushiro (JPN) |
| 44.88 | 7 | 52nd East Hokkaido Competition | 26. - 27.01.2013 | Kitami (JPN) |
| 45.60 | 10 | 35th Hokkaido Junior Games | 19. - 20.01.2013 | Akan (JPN) |
| 46.04 | 64 | 2nd Time Trial | 20.10.2012 | Obihiro (JPN) |
| 47.06 | 21 | 9th Kushiro Final Competition | 25. - 26.02.2012 | Kushiro (JPN) |
| 46.70 | 19 | 34th Hokkaido Junior Games | 14. - 15.01.2012 | Akan (JPN) |
| 51.37 | 11 | 38th Akan Junior Championships | 11. - 13.01.2011 | Akan (JPN) |
| 56.86 | 15 | 37th Akan Junior Conference | 16. - 17.01.2010 | Akan (JPN) |