42.20 | 11 | Inter-High School | 22. - 24.01.1999 | Nagano (JPN) |
42.95 | 12 | Japanese Junior Sprint Championships 1999 | 13. - 14.01.1999 | Shibukawa (JPN) |
43.02 | 4 | Hokkaido Highschool Competition | 23. - 24.12.1998 | Kushiro (JPN) |
42.85 | 1 | 18th Junior Highschool Games | 03. - 04.02.1998 | Kushiro (JPN) |
43.07 | 1 | 28th Hokkaido Junior High School Championships | 08. - 09.01.1998 | Kushiro (JPN) |
44.28 | 5 | All Japan Junior College Games | 05. - 06.02.1997 | Nikkō (JPN) |
44.24 | 4 | 16th All Japan Junior Highschool Games 1996 | 04. - 05.02.1996 | Kōriyama (JPN) |