Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 1536 | Leandro Couto |
CDPRI
|
SUB-16 | 03:01.00 (654) |
| 2 | 1038 | Gabriel Guimarães |
SCB
|
SUB-16 | 03:31.95 (386) |
| 3 | 660 | Arthur Carvalho |
PLF
|
SUB-16 | 03:39.29 (331) |
| 4 | 1229 | José Forte |
CAB
|
SUB-16 | 03:42.96 (306) |
| 5 | 1530 | Gonçalo Martins |
CDPRI
|
SUB-16 | 03:53.86 (235) |