Seong-yu Bak
- Born
- Feb 21, 2003 (23 years old)
- Events
- 400 m hurdles
Seong-yu Bak is a South Korea sprinter, born on February 21, 2003. He competes primarily in the 200m, 400m and 400mH.
His personal bests include 22.49 in the 200m, 48.93 in the 400m, 52.04 in the 400mH and 3:18.77 in the 4x400m. He is currently active on the international athletics circuit, representing South Korea.
Personal best · 400 m hurdles52.04
2026 season best3:17.58May 15, 2026 · Jeongseon Sports Complex, Jeongseon
Last competition106th National Sports Festival, Busan Asiad Stadium, BusanOct 20, 2025 · 52.04
As of Oct 28, 2026: 400 m hurdles 52.04, 2026 season best 3:17.58 (May 15, 2026, Jeongseon Sports Complex, Jeongseon (KOR)) · Last competition: 106th National Sports Festival, Busan Asiad Stadium, Busan, Oct 20, 2025, 52.04 · 23 years old
Personal bests
WA points calculator →Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 4x400m | 3:17.58 | – | May 15, 2026 | 80th Korean Championships |
| 2025 | 400m | 49.96 | – | May 19, 2025 | 54th National Division Athletics Championships, Miryang Sports Complexs, Miryang |
| 2025 | 400mH | 52.04 | – | Oct 20, 2025 | 106th National Sports Festival, Busan Asiad Stadium, Busan |
| 2024 | 400m | 50.39 | – | Jun 13, 2024 | 53rd National Division Athletics Championships, Mokpo Stadium, Mokpo |
| 2024 | 4x400m | 3:18.77 | – | Jun 17, 2024 | 53rd National Division Athletics Championships, Mokpo Stadium, Mokpo |
| 2023 | 400m | 49.63 | – | Jul 6, 2023 | Iksan Stadium, Iksan (KOR) |
| 2023 | 400mH | 52.26 | – | Jul 9, 2023 | Iksan Stadium, Iksan (KOR) |
| 2022 | 400m | 49.78 | – | May 24, 2022 | Iksan (KOR) |