| Posición | Participante | Tiempo |
|---|---|---|
| 1 |
|
50.86 q |
| 2 |
|
51.76 q |
| 3 |
|
51.78 q |
| 4 |
|
52.11 |
| 5 |
|
52.30 |
| 6 |
|
52.40 |
| 7 |
|
52.40 |
| 8 |
|
52.71 |
| Serie 1 2 de Agosto 21:51 | ||
| Posición | Participante | Tiempo |
|---|---|---|
| 1 |
|
51.42 q |
| 2 |
|
51.61 q |
| 3 |
|
51.66 q |
| 4 |
|
51.75 q |
| 5 |
|
51.85 q |
| 6 |
|
51.99 |
| 7 |
|
52.03 |
| 8 |
|
52.16 |
| Serie 2 2 de Agosto 21:51 | ||