| 43.83 | 4 | 52nd East Hokkaido Competition | 26. - 27.01.2013 | Kitami (JPN) |
| 44.39 | 7 | 35th Hokkaido Junior Games | 19. - 20.01.2013 | Akan (JPN) |
| 42.00 | 23 | 43rd Hokkaido Junior High School Competition | 12. - 13.01.2013 | Obihiro (JPN) |
| 43.85 | 15 | 10th World Junior Championship 2003 Memorial - Hokkaido Jhs And Es Competition | 08. - 09.12.2012 | Kushiro (JPN) |
| 44.64 | 58 | 2nd Time Trial | 20.10.2012 | Obihiro (JPN) |
| 46.11 | 18 | 9th Kushiro Final Competition | 25. - 26.02.2012 | Kushiro (JPN) |
| 47.36 | 12 | 19th Akan Junior Sprint Championships | 04. - 05.02.2012 | Akan (JPN) |
| 46.54 | 17 | 34th Hokkaido Junior Games | 14. - 15.01.2012 | Akan (JPN) |
| 46.38 | 30 | 9th World Junior Championship 2003 Memorial | 10. - 11.12.2011 | Kushiro (JPN) |
| 45.50 | 44 | Time Trial | 23.10.2011 | Obihiro (JPN) |
| 48.66 | 25 | 8th Kushiro Final Competition | 26. - 27.02.2011 | Kushiro (JPN) |
| 47.38 | 32 | 50th East Hokkaido Competition | 05.02.2011 | Kushiro (JPN) |
| 47.32 | 34 | 3. Time Trial | 24.10.2010 | Obihiro (JPN) |
| 49.07 | 15 | 28th New Member Conference | 28.02.2010 | Kushiro (JPN) |
| 48.89 | 8 | 37th Akan Junior Conference | 16. - 17.01.2010 | Akan (JPN) |