Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 4908 | Beatriz Esmeriz |
MAC
|
SUB-16 | 22:47.61 |
| 2 | 3522 | Maria Craveiro |
CDP
|
SUB-16 | 26:05.55 |
| 3 | 3752 | Ema Fonseca |
CSGAIA
|
SUB-16 | 26:53.12 |