| 48.95 | 6 | 30th Hokkaido Youth Group Competition | 19. - 20.01.2008 | Kushiro (JPN) |
| 48.52 | 12 | 39th North-South Coastal Highway Competition | 09.12.2007 | Tomakomai (JPN) |
| 47.59 | 37 | 15th Tomakomai Highland Speed Skating Competition | 24. - 25.11.2007 | Tomakomai (JPN) |
| 48.59 | 37 | 35th Hokkaido Speed Skating Championship Conference | 16. - 17.02.2007 | Tomakomai (JPN) |
| WDR | - | 38th Minami High School And Junior High School Competition | 09.12.2006 | Tomakomai (JPN) |
| 49.88 | 26 | 14th Tomakomai Highl. Sk. Games | 18. - 19.11.2006 | Tomakomai (JPN) |
| 50.22 | 4 | 37th North Skating Competition | 10.12.2005 | Tomakomai (JPN) |
| 49.34 | 27 | 13th Tomakomai Highland Meeting | 18. - 20.11.2005 | Tomakomai (JPN) |
| 52.22 | 19 | 35th Tomakomai Championship Conference | 22. - 23.02.2003 | Tomakomai (JPN) |