| 42.57 | 21 | 3rd Time Trial | 21.01.2017 | Obihiro (JPN) |
| 1:02.92 | 34 | 63rd Tokachi Middle School Championship | 03. - 04.12.2016 | Obihiro (JPN) |
| 42.51 | 31 | 2nd Time Trial | 19.11.2016 | Obihiro (JPN) |
| 42.36 | 13 | 25th Tokachi Junior High School Competition | 05.03.2016 | Obihiro (JPN) |
| 42.35 | 15 | 62nd All Tokachi Junior High School Championships | 05. - 06.12.2015 | Obihiro (JPN) |
| 44.11 | 15 | 24th Tokachi Jr. High School Rookie Tournament/High School Record Meeting | 28.02.2015 | Obihiro (JPN) |
| 43.10 | 27 | 54th East Hokkaido Tournament | 31.01.2015 | Obihiro (JPN) |
| 45.32 | 19 | 61st Tokachi Junior High School Championships | 06. - 07.12.2014 | Obihiro (JPN) |
| 46.95 | 28 | 39th Akan Junior Competition / 21th Akan Junior Sprint Championships | 09. - 10.01.2014 | Akan (JPN) |
| 47.03 | 5 | 11th World Junior Championship 2003 Memorial | 07. - 08.12.2013 | Kushiro (JPN) |
| 49.71 | 28 | 35th Hokkaido Junior Games | 19. - 20.01.2013 | Akan (JPN) |