Koya Iwanaga
- Born
- Apr 17, 2006 (20 years old)
- Events
- Hammer Throw (6kg)
Koya Iwanaga is a Japan thrower, born on April 17, 2006. He competes primarily in the HammerThro.
His personal bests include 54.66 in the HammerThro. He is currently active on the international athletics circuit, representing Japan.
Personal best · Hammer Throw (6kg)54.66
2024 season best54.66Jun 14, 2024 · Komazawa Olympic Park Athletic Stadium, Tokyo
Last competitionThe 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, SagamiharaSep 27, 2025 · NM
As of Nov 13, 2026: Hammer Throw (6kg) 54.66, 2024 season best 54.66 (Jun 14, 2024, Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)) · Last competition: The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara, Sep 27, 2025, NM · 20 years old
Personal bests
DisciplineResultAll-time
HammerThroTokyo 202454.66–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2024 | HammerThro | 54.66 | – | Jun 14, 2024 | Kita Kanto Highschool Meeting/Minami Kanto Highschool Meeting, Komazawa Olympic Park Athletic Stadium, Tokyo - South Kanto |
| 2023 | HammerThro | 54.22 | – | Aug 2, 2023 | Inter-High School Championships, Atsubetsu Park Stadium, Sapporo |