| Kosuke Horii | |
| Nationality: | Japanese |
| Country: | Japan |
| Sport: | Track and field |
| Event: | 400 metres |
| Club: | Sumitomo Electric |
| Alma Mater: | Josai University |
| Birth Place: | Saitama Prefecture, Japan |
| Height: | 1.73m (05.68feet)[1] |
| Weight: | 65kg (143lb) |
| Pb: | 200 m: 21.46 (2018) 300 m: 33.43 (2019) 400 m: 45.85 (2015) |
is a Japanese track and field sprinter who specialises in the 400 metres. His personal best in the event is 45.85 seconds. He competed in the 4 × 400 metres relay at the 2017 World Championships.[2]
| Event | Time (s) | Competition | Venue | Date |
|---|---|---|---|---|
| 200 m | 21.46 (wind: +0.7 m/s) | Kansai Corporate Championships | Osaka, Japan | 12 May 2018 |
| 300 m | 33.43 | Izumo Meet | Izumo, Japan | 21 April 2019 |
| 400 m | 45.85 | National Championships | Niigata, Japan | 27 June 2015 |
| Year | Competition | Venue | Position | Event | Time |
|---|---|---|---|---|---|
| Representing | |||||
| 2017 | World Relays | Nassau, Bahamas | (h) | 4×400 m relay | (relay leg: 4th) |
| World Championships | London, United Kingdom | 15th (h) | 4×400 m relay | 3:07.29 (relay leg: 4th) | |
| Year | Competition | Venue | Event | Time |
|---|---|---|---|---|
| Representing Sumitomo Electric | ||||
| 2018 | National Corporate Championships | Osaka, Osaka | 4×400 m relay | 3:08.79 (relay leg: 3rd) |
| National Championships | Kitakyushu, Fukuoka | 4×400 m relay | 3:09.35 (relay leg: 1st) | |