The Women's 400 metre individual medley event at the 2010 Commonwealth Games took place on 9 October 2010, at the SPM Swimming Pool Complex.[1]
Two heats were held. The heat in which a swimmer competed did not formally matter for advancement, as the swimmers with the top eight times from the entire field qualified for the finals.[1]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 6 | 4:43.14 | Q | |||
| 2 | 4 | 4:47.08 | Q | |||
| 3 | 3 | 4:48.94 | Q | |||
| 4 | 5 | 4:48.96 | Q | |||
| 5 | 7 | 4:55.65 | ||||
| 6 | 1 | 5:03.39 | ||||
| 7 | 8 | 5:28.41 | ||||
| – | 2 | DNS |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 4:43.78 | Q | |||
| 2 | 5 | 4:44.96 | Q | |||
| 3 | 6 | 4:48.39 | Q | |||
| 4 | 3 | 4:48.83 | Q | |||
| 5 | 7 | 5:00.77 | ||||
| 6 | 1 | 5:03.66 | ||||
| 7 | 8 | 5:03.72 | ||||
| – | 2 | DNS |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 5 | 4:38.83 | CG | ||||
| 6 | 4:39.45 | |||||
| 4 | 4:41.07 | |||||
| 4 | 3 | 4:41.51 | ||||
| 5 | 2 | 4:44.87 | ||||
| 6 | 7 | 4:46.17 | ||||
| 7 | 1 | 4:47.69 | ||||
| 8 | 8 | 4:52.47 |