Hyeon-seo Sin
South KoreaActive- Born
- Jul 28, 2003 (23 years old)
- Events
- 400 m
Hyeon-seo Sin is a South Korea sprinter, born on July 28, 2003. He competes primarily in the 200m, 400m and 4x400m.
His personal bests include 22.71 in the 200m, 48.68 in the 400m and 3:11.99 in the 4x400m. He has earned 1 gold medal in major international competitions. He is currently active on the international athletics circuit, representing South Korea.
Personal best · 400 m48.68
2026 season best48.53Jul 4, 2026 · Miryang Sports Complexs, Miryang
Last competitionBeak-Je Wangdo Iksan National Athletics MeetingJul 4, 2026 · 48.53
As of Oct 27, 2026: 400 m 48.68, 2026 season best 48.53 (Jul 4, 2026, Miryang Sports Complexs, Miryang (KOR)) · Last competition: Beak-Je Wangdo Iksan National Athletics Meeting, Jul 4, 2026, 48.53 · 23 years old
Personal bests
WA points calculator →Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 400m | 48.53 | – | Jul 4, 2026 | Beak-Je Wangdo Iksan National Athletics Meeting |
| 2026 | 4x400m | 3:15.44 | – | May 15, 2026 | 80th Korean Championships |
| 2025 | 400m | 48.68 | – | Apr 30, 2025 | Naju KTFL National Club Athletics Championships 2025, Naju Sports Complex, Naju |
| 2025 | 4x400m | 3:12.07 | – | Apr 22, 2025 | National Selection Meeting for 2025 Gumi Asian Athletics Championships, Gumi Civic Stadium, Gumi |
| 2024 | 400m | 48.95 | – | May 3, 2024 | 52nd Flag of KBS National Athletics Meeting, Yecheon Stadium, Yecheon |
| 2024 | 4x400m | 3:12.02 | – | Jun 17, 2024 | 53rd National Division Athletics Championships, Mokpo Stadium, Mokpo |
| 2023 | 400m | 49.24 | – | Jun 24, 2023 | Korean Championships |
| 2023 | 4x400m | 3:11.99 | – | May 9, 2023 | 51st Flag of KBS National Athletics Meeting, Yecheon Stadium, Yecheon |