Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 916 | Tomás Machado |
GRE-AA
|
SUB-18 | 03:11.52 (556) |
| 2 | 1147 | Gabriel Santos |
ACDRSQ
|
SUB-18 | 03:17.89 (500) |
| 3 | 834 | Rui Silveira |
CLUVE
|
SUB-18 | 03:20.36 (479) |
| 4 | 509 | José Pedro Jesus |
ACDRSQ
|
SUB-18 | 03:25.97 (432) |
| DNS | 9 | Afonso Martins |
OLIVAIS
|
SUB-18 | x |