400m Heats - (W), Heat:1 of 2 ; Official result since 13:13
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 4 | 233 | T PIRIYAH | 58,4 | SIN | 58.51 | Q | ||
| 2 | 2 | 27 | LAM CHRISTY HO YAN | 57,37 | HKG | 58.73 | Q | ||
| 3 | 3 | 212 | NOELLE LEE XUE NGOH | 59.69s | SIN | 59.41 | Q | ||
| 4 | 7 | 99 | BALA DIVYASHREE | 61,2 | NTU | 1:00.74 | q | ||
| 5 | 5 | 107 | MONTEIRO AMELIA | 67.8s | NUS | 1:07.04 | |||
| 6 | 243 | WENDY ENN | SIN | DNS |