Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 881 | Tomás Nobre |
AEAC
|
SUB-18 | 04:23.12 |
| 2 | 538 | João Lopes |
SCA
|
SUB-18 | 04:37.35 |
| 3 | 782 | João Pedro Silva |
CBA-S
|
SUB-20 | 05:24.53 |
| 4 | 1134 | Samuel Lopes |
A20KM
|
SUB-18 | 05:44.38 |