Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 266 | Gonçalo Mineiro |
SLA
|
SUB-16 | 04:19.41 |
| 2 | 64 | Tomás Baço |
CPPEA
|
SUB-16 | 04:38.91 |
| 3 | 874 | Martim Bonaparte |
CPC
|
SUB-16 | 05:26.20 |
| 4 | 331 | Tomás Herbert |
GDIB
|
SUB-16 | 05:26.56 |
| DNS | 800 | Leonel Cruz |
CBSEIXAL
|
SUB-16 | x |