Round 1
| Position | BIB | Name | Team | Echelon | Mark |
|---|---|---|---|---|---|
| 1 | 4300 | Beatriz Esmeriz |
MAC
|
SUB-16 | 26:36.12 |
| 2 | 3550 | Isabela Gomes |
CDP
|
SUB-16 | 27:34.65 |
| 3 | 3881 | Melinda Silva |
CSGAIA
|
SUB-16 | 28:19.16 |
| DSQ | 5338 | Bárbara Ferraz |
RUNRIVER
|
SUB-16 | x |
| DSQ | 5561 | Matilde Martins |
CDCNAV
|
SUB-16 | x |