Hwi-in Jo
South KoreaActive- Born
- May 6, 2003 (23 years old)
- Events
- 400 m hurdles · 400 m
Hwi-in Jo is a South Korea sprinter, born on May 6, 2003. He competes primarily in the 100m, 200m and 400m.
His personal bests include 10.86 in the 100m, 22.15 in the 200m, 47.94 in the 400m, 51.61 in the 400mH and 42.50 in the 4x100m. 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 m hurdles51.61
2026 season best42.50Jun 5, 2026 · Miryang Sports Complexs, Miryang
Personal best · 400 m47.94
Last competitionMiryang Arirang National Athletics MeetingJun 9, 2026 · 3:16.57
As of Oct 28, 2026: 400 m hurdles 51.61, 400 m 47.94, 2026 season best 42.50 (Jun 5, 2026, Miryang Sports Complexs, Miryang (KOR)) · Last competition: Miryang Arirang National Athletics Meeting, Jun 9, 2026, 3:16.57 · 23 years old
Personal bests
WA points calculator →DisciplineResultAll-time
4x100mMiryang 202642.50–
4x400mJeongseon 20253:08.99–
* Wind-assisted (> 2.0 m/s)
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 4x100m | 42.50 | – | Jun 5, 2026 | Miryang Arirang National Athletics Meeting |
| 2026 | 4x400m | 3:16.57 | – | Jun 9, 2026 | Miryang Arirang National Athletics Meeting |
| 2025 | 400m | 48.10 | – | Jun 22, 2025 | 79th Korean Championships |
| 2025 | 400mH | 51.70 | – | May 30, 2025 | 26th Asian Athletics Championships, Gumi Civic Stadium, Gumi |
| 2025 | 4x400m | 3:08.99 | – | Jun 24, 2025 | 79th Korean Championships |
| 2024 | 200m | 22.43 | +1.1 | Apr 13, 2024 | 79th National University Athletics Championships, Yecheon Stadium, Yecheon |
| 2024 | 400m | 48.11 | – | Jul 8, 2024 | 2024 Iksan National Athletics Meeting, Iksan |
| 2024 | 400mH | 55.31 | – | Jul 7, 2024 | 2024 Iksan National Athletics Meeting, Iksan |