| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Miyu MURAKAMI | 19/08/2007 | U20 Race | Final | 19 | 21:12 |
| M | Yamato HAMAGUCHI | 03/05/2006 | U20 Race | Final | 22 | 24:29 |
| X | Japan | Mixed Relay | Final | 7 | 23:18 | |
| W | Erika TANOURA | 01/02/2000 | Senior Race | Final | 27 | 34:00 |
| M | Ryuto IGAWA | 05/09/2000 | Senior Race | Final | 55 | 30:23 |