Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 15 | Rafael Ornelas |
ACFR
|
SUB-20 | 04:48.48 (628) |
| 2 | 75 | Samuel Falieu-Mané |
SLB
|
SUB-20 | 04:50.65 (615) |
| 3 | 73 | Eduardo Carrolo |
SLB
|
SUB-20 | 04:54.11 (594) |
| 4 | 64 | Celio Quaresma |
SCP
|
SUB-20 | 04:54.49 (592) |
| 5 | 12 | João Gomes |
ACDAV
|
SUB-20 | 05:10.69 (500) |