Koshin Yamakawa

Koshin Yamakawa

JapanJapanActive
Born
Apr 13, 2001 (25 years old)
Events
Hammer Throw

Koshin Yamakawa is a Japan thrower, born on April 13, 2001. He competes primarily in the SP, DT and HT.

His personal bests include 12.33 in the SP, 43.10 in the DT, 68.10 in the HT and 65.44 in the HammerThro. He is currently active on the international athletics circuit, representing Japan.

Personal best · Hammer Throw68.10
2026 season best67.34Jun 13, 2026 · Municipal Mizuho Stadium, Nagoya
2026 season best
Last competitionJapanese ChampionshipsJun 13, 2026 · 67.34
Japanese Championships

As of Nov 13, 2026: Hammer Throw 68.10, 2026 season best 67.34 (Jun 13, 2026, Municipal Mizuho Stadium, Nagoya (JPN)) · Last competition: Japanese Championships, Jun 13, 2026, 67.34 · 25 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
SPGifu 2026Japan Shot Put all-time list12.33666 pts––
DTGifu 2026Japan Discus Throw all-time list43.10751 pts––
HTTokyo 2025Japan Hammer Throw all-time list68.101,019 pts–#223
HammerThroHitachinaka 201965.44––

Progression

SeasonDisciplineResultWindDateCompetitions
2026SP 12.33–May 9, 202670th Central Japan Corporate Teams Athletics Championships
2026DT 43.10–May 10, 202670th Central Japan Corporate Teams Athletics Championships
2026HT 67.34–Jun 13, 2026Japanese Championships
2025HT 68.10–Jul 5, 2025Japanese Championships, National Stadium, Tokyo
2024HT 67.11–Jun 27, 2024Japanese Championships
2023HT 66.79–Sep 16, 202392nd Japan Inter-University Athletics Championships, Prefectural Stadium, Kumagaya
2022HT 63.69–Sep 9, 2022Takebishi Stadium, Kyoto (JPN)
2021HT 65.82–Sep 19, 2021Prefectural Stadium, Kumagaya (JPN)
FAQ

Frequently asked questions

Koshin Yamakawa's Hammer Throw personal best is 68.10, set on Jul 5, 2025 in National Stadium, Tokyo (JPN).

Koshin Yamakawa competes in the Hammer Throw.

2026 season best: 67.34, set on Jun 13, 2026 in Municipal Mizuho Stadium, Nagoya (JPN). Last competition: Japanese Championships on Jun 13, 2026, 67.34.