| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Taisei YOSHIZAKO | 15/01/2005 | 10 Kilometres Race Walk | Final | 6 | 40:39 |
| W | Suzuka KUGE | 18/07/2005 | 10 Kilometres Race Walk | Final | 15 | 46:41 |
| W | Ayane YANAI | 24/12/2003 | 20 Kilometres Race Walk | Final | 18 | 1:32:52 |
| M | Yuta KOGA | 15/07/1999 | 20 Kilometres Race Walk | Final | 4 | 1:19:54 |
| X | Japan | Marathon Race Walk Mixed Relay | Final | 2 | 2:57:04 |