In-duk Seo
- Born
- Jan 16, 2004 (22 years old)
- Events
- 400 m
In-duk Seo is a South Korea sprinter, born on January 16, 2004. He competes primarily in the 100m, 200m and 400m.
His personal bests include 11.38 in the 100m, 22.90 in the 200m, 49.77 in the 400m, 57.90 in the 400mH and 3:18.28 in the 4x400m. He is currently active on the international athletics circuit, representing South Korea.
Personal best · 400 m49.77
2025 season best49.77Jul 6, 2025 · Iksan Sports Complex, Iksan
Last competition106th National Sports Festival, Busan Asiad Stadium, BusanOct 22, 2025 · 3:18.89
As of Oct 28, 2026: 400 m 49.77, 2025 season best 49.77 (Jul 6, 2025, Iksan Sports Complex, Iksan (KOR)) · Last competition: 106th National Sports Festival, Busan Asiad Stadium, Busan, Oct 22, 2025, 3:18.89 · 22 years old
Personal bests
WA points calculator →Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2025 | 100m | 11.38 | -1.4 | Jul 1, 2025 | 4th National University Athletics Meeting, Seocheon Sports Complex, Seocheon |
| 2025 | 400m | 49.77 | – | Jul 6, 2025 | 2025 Beak-Je Wangdo Iksan National Athletics Meeting, Iksan Sports Complex, Iksan |
| 2025 | 4x400m | 3:18.89 | – | Oct 22, 2025 | 106th National Sports Festival, Busan Asiad Stadium, Busan |
| 2024 | 200m | 22.90 | -0.7 | Jul 7, 2024 | 2024 Iksan National Athletics Meeting, Iksan |
| 2024 | 400m | 50.47 | – | Jul 8, 2024 | 2024 Iksan National Athletics Meeting, Iksan |
| 2023 | 400m | 50.14 | – | Jun 23, 2023 | Korean U20 Championships, Jeongseon Sports Complex, Jeongseon |
| 2023 | 400mH | 57.90 | – | Jul 9, 2023 | Iksan Stadium, Iksan (KOR) |
| 2023 | 4x400m | 3:18.28 | – | Oct 18, 2023 | 104th National Sports Festival, Mokpo |