Yun-seo CHOI
South KoreaActive- Born
- May 11, 2003 (23 years old)
Yun-seo CHOI is a South Korea sprinter, born on May 11, 2003. She competes primarily in the 400m, 400mH and 4x400Metre.
Her personal bests include 59.05 in the 400m, 1:02.60 in the 400mH and 3:40.68 in the 4x400Metre. She is currently active on the international athletics circuit, representing South Korea.
2026 season best59.54Jul 4, 2026
Last competitionBeak-Je Wangdo Iksan National Athletics MeetingJul 4, 2026 · 59.54
As of Nov 7, 2026: 2026 season best 59.54 (Jul 4, 2026) · Last competition: Beak-Je Wangdo Iksan National Athletics Meeting, Jul 4, 2026, 59.54 · 23 years old
Personal bests
WA points calculator →DisciplineResultAll-time
4x400MetreBusan 20253:40.68–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 400m | 59.54 | – | Jul 4, 2026 | Beak-Je Wangdo Iksan National Athletics Meeting |
| 2026 | 400mH | 1:03.93 | – | May 13, 2026 | 80th Korean Championships |
| 2025 | 400mH | 1:03.87 | – | Oct 20, 2025 | 106th National Sports Festival, Busan Asiad Stadium, Busan |
| 2025 | 4x400Metre | 3:40.68 | – | Oct 21, 2025 | 106th National Sports Festival, Busan Asiad Stadium, Busan |
| 2024 | 400mH | 1:03.19 | – | Oct 14, 2024 | 105th National Sports Festival, Gimhae Stadium, Gimhae |
| 2023 | 400mH | 1:05.58 | – | Oct 16, 2023 | 104th National Sports Festival, Mokpo |
| 2022 | 400mH | 1:04.42 | – | Oct 10, 2022 | Ulsan (KOR) |
| 2021 | 400mH | 1:02.82 | – | Jun 26, 2021 | Jeongseon (KOR) |