Mikoko Arai

JapanJapanActive
Born
Jan 22, 2008 (18 years old)
Events
200 m · 300 Metres

Mikoko Arai is a Japan sprinter, born on January 22, 2008. She competes primarily in the 100m, 200m and 4x100m.

Her personal bests include 12.29 in the 100m, 24.71 in the 200m, 47.29 in the 4x100m, 3:45.18 in the 4x400m and 7.90 in the 60m. She is currently active on the international athletics circuit, representing Japan.

Personal best · 200 m24.71
2026 season best25.78Apr 5, 2026 · NITTAIDAI Athletic Stadium, Yokohama
2026 season best
Personal best · 300 Metres40.13
Last competition2nd SANO Sprint, Seisyu KAIKA Stadium, TochigiAug 11, 2026 · 13.16
2nd SANO Sprint, Seisyu KAIKA Stadium, Tochigi

As of Nov 14, 2026: 200 m 24.71, 300 Metres 40.13, 2026 season best 25.78 (Apr 5, 2026, NITTAIDAI Athletic Stadium, Yokohama (JPN)) · Last competition: 2nd SANO Sprint, Seisyu KAIKA Stadium, Tochigi, Aug 11, 2026, 13.16 · 18 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
100mUtsunomiya 2025Japan 100 m all-time list12.29935 pts–
200mNiigata 2024Japan 200 m all-time list24.71969 pts–
4x100mTokyo 2024Japan 4 × 100 m all-time list47.29–
4x400mTokyo 2024Japan 4 × 400 m all-time list3:45.18–
60mIndoorOsaka 20257.90926 pts–
300mIse 202440.13951 pts–

Progression

SeasonDisciplineResultWindDateCompetitions
2026100m 12.66-0.7Apr 5, 202651st University inter-College Track and Field Tournament
2026200m 25.78+1.4Apr 5, 202651st University inter-College Track and Field Tournament
20264x100m 47.62–Apr 5, 202651st University inter-College Track and Field Tournament
202560m Indoor7.90–Feb 1, 2025Japan Indoor Meet - U20 & U18
2025100m 12.29+0.1Jun 14, 2025Kanto High School Championships, Kanseki Stadium, Utsunomiya - South Kanto
2025200m 25.15-1.7Jul 28, 20252025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
2025300m 40.30–Oct 19, 202519th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
202460m Indoor7.92–Feb 3, 20242024 Japan Indoor Meet - U20 & U18
FAQ

Frequently asked questions

Mikoko Arai's 200 m personal best is 24.71, set on Jun 29, 2024 in Denka Big Swan Stadium, Niigata (JPN).

Mikoko Arai competes in the 200 m and 300 Metres.

2026 season best: 25.78, set on Apr 5, 2026 in NITTAIDAI Athletic Stadium, Yokohama (JPN). Last competition: 2nd SANO Sprint, Seisyu KAIKA Stadium, Tochigi on Aug 11, 2026, 13.16.