Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 1329 | Bernardo Pereira |
A20KM
|
SUB-18 | 04:54.44 (592) |
| 2 | 1425 | Rafael Inácio |
JDAL
|
SUB-18 | 04:55.54 (586) |
| 3 | 1424 | Pedro Santos |
JDAL
|
SUB-18 | 05:01.82 (549) |
| 4 | 1420 | Xavier Casal |
CPA-S
|
SUB-18 | 05:03.53 (540) |
| 5 | 1325 | Tomás Cavaleiro |
A20KM
|
SUB-18 | 05:32.92 (385) |
| 6 | 24 | Henrique Lopes |
CPPEA
|
SUB-18 | 06:08.71 (230) |
| 7 | 308 | Cauã Silva |
GDIB
|
SUB-18 | 06:12.24 (216) |
| 8 | 1413 | Guilherme Gomes |
CPA-S
|
SUB-18 | 06:17.37 (198) |