Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 963 | Matheus Borges |
COP
|
SUB-23 | 03:56.23 |
| 2 | 721 | Gonçalo Casimiro |
CBF
|
SEN | 03:57.77 |
| 3 | 168 | Vasco Tita |
AABV
|
SUB-23 | 04:07.61 |
| 4 | 670 | Miguel Silva |
CASJ
|
M 50 | 04:13.53 |
| 5 | 865 | Vicente Afonso |
CDQ
|
SUB-18 | 04:53.58 |