| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Koichiro•Morioka |
| Used name | Koichiro•Morioka |
| Original name | 森岡•紘一朗 |
| Born | 2 April 1985 in Isahaya, Nagasaki (JPN) |
| Measurements | 185 cm / 69 kg |
| Affiliations | Fujitsu |
| NOC | Japan |
Personal Best: 20kmW – 1-20:14 (2013).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2008 Summer Olympics | Athletics | JPN |
Koichiro Morioka | |||
| 20 kilometres Race Walk, Men (Olympic) | 16 | |||||
| 2012 Summer Olympics | Athletics | JPN |
Koichiro Morioka | |||
| 50 kilometres Race Walk, Men (Olympic) | 7 | |||||
| 2016 Summer Olympics | Athletics | JPN |
Koichiro Morioka | |||
| 50 kilometres Race Walk, Men (Olympic) | 27 |