Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 1958 | Mariana Machin |
ADRAP
|
SUB-16 | 02:32.46 |
| 2 | 2618 | Luna Ribeiro |
CSM
|
SUB-16 | 03:00.54 |
| DNF | 1689 | Leonor Freitas |
ADRAP
|
SUB-16 | x |