| 4:32.66 | 92 | 13th M-Wave Cup | 14. - 15.02.2015 | Nagano (JPN) |
| WDR | - | 53rd Karuizawa Jr. High School Competitions/Karuizawa Winter Festival 2015 | 17. - 18.01.2015 | Karuizawa (JPN) |
| 4:25.11 | 12 | 53rd Nagano Prefecture Junior High School Competition | 06. - 07.01.2015 | Nagano (JPN) |
| 4:40.74 | 28 | 63rd All Shinshu Championships | 27. - 28.12.2014 | Okaya (JPN) |
| 4:33.24 | 4 | 16th Nagano Prefecture Junior High School Competitions/64th Matsubarako Competition | 13. - 14.12.2014 | Koumi (JPN) |
| 4:28.64 | 75 | 12th M-Wave Cup | 14. - 16.02.2014 | Nagano (JPN) |
| 4:40.13 | 11 | 52nd Karuizawa Junior High School Competition | 18. - 19.01.2014 | Karuizawa (JPN) |
| 4:41.04 | 30 | 62nd All Shinshu (Nagano Pref.) Championships | 11. - 12.01.2014 | Koumi (JPN) |
| 4:32.96 | 14 | 52nd Nagano Prefecture Junior High School Sports Festival Competition | 06. - 07.01.2014 | Nagano (JPN) |
| 4:48.79 | 9 | 63rd Matsubarako Junior High School Competition | 14. - 15.12.2013 | Koumi (JPN) |
| 4:40.18 | 84 | 11th M-Wave Cup | 15. - 17.02.2013 | Nagano (JPN) |
| 5:00.45 | 42 | 61st All Shinshu Championships | 09. - 10.02.2013 | Chikuma (JPN) |
| 4:46.87 | 17 | 51st Karuizawa Junior High School Competition | 12. - 13.01.2013 | Karuizawa (JPN) |
| 5:20.89 | 24 | 51st Nagano Prefecture Junior High School Competition | 07. - 08.01.2013 | Nagano (JPN) |
| 5:05.70 | 10 | 62nd Matsubarako Competition | 08. - 09.12.2012 | Koumi (JPN) |