| 45.77 | 6 | 18th All-Japan Games | 27. - 28.02.1984 | Morioka (JPN) |
| 43.58 | 4 | 3rd All Japan Student Championships | 14. - 15.02.1984 | Shibukawa (JPN) |
| 44.02 | 3 | 56th All Japan Student Games | 21. - 23.12.1983 | Nikkō (JPN) |
| 45.21 | 14 | Japanese Sprint Championships 1984 | 16. - 17.12.1983 | Morioka (JPN) |
| 43.76 | 9 | 14th Asama-Games Incl 9th Japan-China Friendships Meeting | 08. - 09.12.1983 | Matsumoto (JPN) |
| 45.48 | 10 | 7th Makomanai-Games | 03. - 04.12.1983 | Sapporo (JPN) |
| 44.31 | 5 | 17th All Japan Selected | 28.02. - 01.03.1983 | Morioka (JPN) |
| 44.27 | 3 | 2nd University Championships | 08. - 09.02.1983 | Shibukawa (JPN) |
| 44.35 | 8 | Japanese Sprint Championships 1983 | 14. - 15.01.1983 | Shibukawa (JPN) |
| 43.28 | 4 | 13th Asama Selected | 10. - 11.12.1982 | Matsumoto (JPN) |
| 45.80 | 8 | 6th Makomanai Selected | 04. - 05.12.1982 | Sapporo (JPN) |
| 43.77 | 2 | Japanese Junior Allround Championships 1982 | 02. - 03.02.1982 | Shibukawa (JPN) |
| 42.34 | 1 | 31st All Japan High School Students Championships | 21. - 23.01.1982 | Hachinohe (JPN) |
| 43.10 | 3 | The 16th All-Japan Selected Competition | 16. - 18.12.1981 | Matsumoto (JPN) |
| 44.76 | 9 | 7th Japan And China Firendship Competition | 10. - 12.12.1981 | Matsumoto (JPN) |
| 45.34 | 3 | 5th Olympic Games Commemoration Makomanai Selected | 05. - 06.12.1981 | Sapporo (JPN) |
| 45.89 | 3 | Japanese Allround Championships 1981 | 19. - 20.02.1981 | Kawakami (JPN) |
| 45.38 | 3 | 30th All Japan High School | 22. - 23.01.1981 | Fujikawaguchiko (JPN) |
| 44.42 | 7 | 11th Asama Selected | 11. - 12.12.1980 | Matsumoto (JPN) |
| 46.09 | 7 | 4th Makomanai Selected | 06. - 07.12.1980 | Sapporo (JPN) |