Yun-seo Jo

South KoreaSouth KoreaActive
Born
Sep 13, 2005 (21 years old)
Events
400 m hurdles · 100 m

Yun-seo Jo is a South Korea sprinter, born on September 13, 2005. She competes primarily in the 100m, 200m and 400m.

Her personal bests include 12.36 in the 100m, 25.41 in the 200m, 58.41 in the 400m, 1:00.95 in the 400mH and 46.49 in the 4x100m. She has earned 1 gold and 1 bronze medals in major international competitions. She is currently active on the international athletics circuit, representing South Korea.

Personal best · 400 m hurdles1:00.95
2026 season best1:03.03May 2, 2026 · Mokpo Sports Complex, Mokpo
2026 season best
Personal best · 100 m12.36
Last competition55th National Division Athletics Championships, Mokpo Sports Complex, Mokpo - University EventsMay 2, 2026 · 1:03.03
55th National Division Athletics Championships, Mokpo Sports Complex, Mokpo - University Events

As of Nov 6, 2026: 400 m hurdles 1:00.95, 100 m 12.36, 2026 season best 1:03.03 (May 2, 2026, Mokpo Sports Complex, Mokpo (KOR)) · Last competition: 55th National Division Athletics Championships, Mokpo Sports Complex, Mokpo - University Events, May 2, 2026, 1:03.03 · 21 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
100mIksan 2023South Korea 100 m all-time list12.36921 pts–
200mIksan 2023South Korea 200 m all-time list25.41904 pts–
400mJeongseon 2022South Korea 400 m all-time list58.41891 pts–
400mHMiryang 2025South Korea 400 m hurdles all-time list1:00.95994 pts–
4x100mIksan 2025South Korea 4 × 100 m all-time list46.49–
4x400mYecheon 2023South Korea 4 × 400 m all-time list3:47.46–

Progression

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FAQ

Frequently asked questions

Yun-seo Jo's 400 m hurdles personal best is 1:00.95, set on May 21, 2025 in Miryang Sports Complexs, Miryang (KOR).

Yun-seo Jo competes in the 400 m hurdles and 100 m.

2026 season best: 1:03.03, set on May 2, 2026 in Mokpo Sports Complex, Mokpo (KOR). Last competition: 55th National Division Athletics Championships, Mokpo Sports Complex, Mokpo - University Events on May 2, 2026, 1:03.03.