Dah-yeon Seo

Dah-yeon Seo

South KoreaSouth KoreaActive
Born
Aug 20, 2002 (24 years old)
Events
400 m · 200 m

Dah-yeon Seo is a South Korea sprinter, born on August 20, 2002. She competes primarily in the 100m, 200m and 400m.

Her personal bests include 12.83 in the 100m, 25.31 in the 200m, 56.69 in the 400m, 47.14 in the 4x100m and 3:44.48 in the 4x400m. She has earned 1 gold medal in major international competitions. She is currently active on the international athletics circuit, representing South Korea.

Personal best · 400 m56.69
2026 season best57.84Jul 4, 2026 · Jeongseon Sports Complex, Jeongseon
2026 season best
Personal best · 200 m25.31
Last competitionBeak-Je Wangdo Iksan National Athletics MeetingJul 4, 2026 · 57.84
Beak-Je Wangdo Iksan National Athletics Meeting

As of Nov 6, 2026: 400 m 56.69, 200 m 25.31, 2026 season best 57.84 (Jul 4, 2026, Jeongseon Sports Complex, Jeongseon (KOR)) · Last competition: Beak-Je Wangdo Iksan National Athletics Meeting, Jul 4, 2026, 57.84 · 24 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
100mJeongseon 2019South Korea 100 m all-time list12.83834 pts–
200mYecheon 2020South Korea 200 m all-time list25.31913 pts–
400mSeocheon 2023South Korea 400 m all-time list56.69952 pts–
4x100mGimhae 2024South Korea 4 × 100 m all-time list47.14–
4x400mUlsan 2022South Korea 4 × 400 m all-time list3:44.48–
4x400MetreJeongseon 20233:32.60–

Progression

Compare me
SeasonDisciplineResultWindDateCompetitions
2026200m 25.57-1.4May 27, 202630th Naju KTFL National Club Athletics Championships
2026400m 57.84–Jul 4, 2026Beak-Je Wangdo Iksan National Athletics Meeting
2025200m 25.95+1.1Apr 2, 2025Gimhae KTFL National Club Athletics Meeting, Gimhae Stadium, Gimhae
2025400m 59.33–Apr 1, 2025Gimhae KTFL National Club Athletics Meeting, Gimhae Stadium, Gimhae
20244x100m 47.14–Oct 15, 2024105th National Sports Festival, Gimhae Stadium, Gimhae
2024400m 59.18–Sep 10, 202435th National Club Athletics Meeting, Seocheon Sports Complex, Seocheon
20244x400Metre 3:36.32–Sep 11, 202435th National Club Athletics Meeting, Seocheon Sports Complex, Seocheon
20244x400m 3:45.96–Oct 16, 2024105th National Sports Festival, Gimhae Stadium, Gimhae
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FAQ

Frequently asked questions

Dah-yeon Seo's 400 m personal best is 56.69, set on Sep 7, 2023 in Seocheon Sports Complex, Seocheon (KOR).

Dah-yeon Seo competes in the 400 m and 200 m.

2026 season best: 57.84, set on Jul 4, 2026 in Jeongseon Sports Complex, Jeongseon (KOR). Last competition: Beak-Je Wangdo Iksan National Athletics Meeting on Jul 4, 2026, 57.84.