Seiji Inagaki
- Born
- Apr 28, 1973 (53 years old)
- Events
- 400 m · 400 m hurdles
Seiji Inagaki is a Japan sprinter, born on April 28, 1973. He competes primarily in the 400m, 400mH and 4x400m.
His personal bests include 45.60 in the 400m, 50.01 in the 400mH, 3:03.21 in the 4x400m, 3:07.30 in the 4x400Metre and 47.21 in the 400m-short-track. He has earned 1 silver and 2 bronze medals in major international competitions. He is currently active on the international athletics circuit, representing Japan.
Personal best · 400 m45.60
1998 season best46.71May 5, 1998
Personal best · 400 m hurdles50.01
As of Nov 7, 2026: 400 m 45.60, 400 m hurdles 50.01, 1998 season best 46.71 (May 5, 1998) · 53 years old
Personal bests
WA points calculator →DisciplineResultAll-time
4x400MetreIndoorToronto 19933:07.30–
400m-short-trackIndoorYokohama 199747.211,093 pts–
400m-short-track199747.211,093 pts–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 1998 | 400m | 46.71 | – | May 5, 1998 | – |
| 1997 | 400m | 45.60 | – | Sep 6, 1997 | – |
| 1997 | 400m-short-track | 47.21 | – | Mar 1, 1997 | – |
| 1997 | 4x400m | 3:03.85 | – | Aug 9, 1997 | IAAF World Championships, Olympic Stadium, Athina |
| 1995 | 400m | 46.19 | – | May 19, 1995 | – |
| 1995 | 400m-short-track Indoor | 47.59 | – | Mar 10, 1995 | IAAF World Indoor Championships |
| 1995 | 4x400Metre Indoor | 3:09.73 | – | Mar 12, 1995 | IAAF World Indoor Championships |
| 1994 | 400m | 45.84 | – | Oct 11, 1994 | – |