Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 8996 | Tomás Neiva |
CAOV
|
SUB-18 | 03:13.27 (540) |
| 2 | 8683 | João Gomes |
ACDAV
|
SUB-18 | 03:14.96 (525) |
| 3 | 8700 | Diogo Alcobia |
CAOV
|
SUB-18 | 03:15.34 (522) |
| 4 | 8606 | André Castro |
GJVP
|
SUB-18 | 03:17.48 (503) |
| 5 | 8710 | Noé Almeida |
CAOV
|
SUB-18 | 03:30.10 (400) |