KO

Kosei Onishi

JPNJPNMen
Birth dateFeb 8, 2005
Height-
Weight-

Kosei Onishi is a Japan thrower, born on February 8, 2005. He competes primarily in the JT.

His personal bests include 71.30 in the JT. He ranks 96th all-time in the JT for Japan. He is currently active on the international athletics circuit, representing Japan.

Key facts
Javelin Throw
71.30
#96 in Japan
2026 season best
71.30
Apr 24, 2026 · Lemon Gas Stadium, Hiratsuka (JPN)
2026 season best
Last competition
95th Japan Inter-University Athletics Championships
Sep 5, 2026 · 67.97
95th Japan Inter-University Athletics Championships
Age
21 years old

As of Sep 20, 2026: Javelin Throw 71.30, 2026 season best 71.30 (Apr 24, 2026, Lemon Gas Stadium, Hiratsuka (JPN)) · Last competition: 95th Japan Inter-University Athletics Championships, Sep 5, 2026, 67.97 · 21 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
JT
71.30-Apr 24, 2026
↓
All Japan University Track & Field Challenge
2023
JT
64.65-Sep 23, 2023
↓
34th Kanto University Rookies Athletics Championships, Gion Stadium, Sagamihara

Honours

No medals

FAQ

Frequently asked questions

What is Kosei Onishi's Javelin Throw personal best?

Kosei Onishi's Javelin Throw personal best is 71.30, set on Apr 24, 2026 in Lemon Gas Stadium, Hiratsuka (JPN).

Which events does Kosei Onishi compete in?

Kosei Onishi competes in the Javelin Throw.

How did Kosei Onishi perform in 2026?

2026 season best: 71.30, set on Apr 24, 2026 in Lemon Gas Stadium, Hiratsuka (JPN). Last competition: 95th Japan Inter-University Athletics Championships on Sep 5, 2026, 67.97.