| Rank | Heat | Athlete | Time | Qualification Mark | Records | + |
|---|---|---|---|---|---|---|
| 1 | 2 |
| 31.57 | Q | OC | + |
| 2 | 2 |
| 31.61 | Q | AM | + |
| 3 | 3 |
| 31.81 | Q | + | |
| 4 | 2 |
| 31.93 | Q | + | |
| 5 | 3 |
| 32.01 | Q | + | |
| 6 | 1 |
| 32.34 | Q | + | |
| 7 | 3 |
| 32.39 | Q | + | |
| 8 | 3 |
| 32.67 | Q | + | |
| 9 | 2 |
| 32.68 | + | ||
| 10 | 3 |
| 32.92 | + | ||
| 11 | 1 |
| 32.96 | + | ||
| 12 | 1 |
| 33.10 | + | ||
| 13 | 1 |
| 34.02 | + | ||
| 14 | 2 |
| 34.53 | + | ||
| 15 | 2 |
| 34.66 | + | ||
| 16 | 3 |
| 35.00 | + | ||
| 17 | 1 |
| 35.25 | + | ||
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