| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Cillian Melly | 200 L Fly | Finals | 2:03.32 |
| 2 | Cillian Melly | 200 L Fly | Prelims | 2:05.74 |
| 3 | Cillian Melly | 400 L IM | Finals | 4:34.99 |
| 4 | Cillian Melly | 100 L Fly | Finals | 56.67 |
| 5 | Cillian Melly | 200 L IM | Finals | 2:09.87 |
| 6 | Cillian Melly | 50 L Fly | Finals | 25.64 |
| 7 | Cillian Melly | 100 L Fly | Prelims | 57.07 |
| 8 | Cillian Melly | 200 L Free | Timed Finals | 1:57.31 |
| 9 | Cillian Melly | 200 L IM | Prelims | 2:11.79 |
| 10 | Cillian Melly | 400 L IM | Prelims | 4:43.02 |
| Name | Event | Round | Time | |
|---|---|---|---|---|
| 1 | Connacht | 800 L Free Relay | Timed Finals | |
| 2 | Connacht | 400 L Free Relay | Timed Finals | |
| 3 | Connacht | 400 L Medley Relay | Timed Finals | |
| 4 | Connacht (B) | 400 L Free Relay | Timed Finals | |
| 5 | Connacht (B) | 800 L Free Relay | Timed Finals | |
| Name | Gold | Silver | Bronze | Score | FINA | |
|---|---|---|---|---|---|---|
| 1 | Cillian Melly | 0 | 0 | 0 | 67 | 677.3 |
| 2 | Callum Ashton | 0 | 0 | 0 | 5 | 593.8 |
| 3 | Oisin O'Rourke | 0 | 0 | 0 | – | 542.5 |
| 4 | Ciaran Burke | 0 | 0 | 0 | – | 536.7 |
| 5 | Fionn Duffy | 0 | 0 | 0 | – | 531.5 |
