The women's 400 metre freestyle was a swimming event held as part of the swimming at the 1924 Summer Olympics programme. It was the first appearance of the event, in 1920 a 300 metre race was contested. The competition was held from Sunday July 13, 1924 to Tuesday July 15, 1924.
Eighteen swimmers from eight nations competed.
| World Record | 5:53.2 | Gertrude Ederle | Indianapolis (USA) | August 4, 1922 |
|---|---|---|---|---|
| Olympic Record | - | none | - | - |
In the first heat Gertrude Ederle set the first Olympic record for this event with 6:12.2 minutes. In the final Martha Norelius won with the new Olympic record of 6:02.2 minutes.
Sunday July 13, 1924: The fastest two in each heat and the fastest third-placed from across the heats advanced.
Heat 1
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:12.2 | QQ OR | |
| 2 | 6:28.6 | ||
| 3 | 6:58.2 | ||
| 4 | 7:05.4 | ||
| 5 | 7:06.4 |
Heat 2
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:23.2 | ||
| 2 | 6:34.6 | ||
| 3 | 7:15.0 | ||
| 4 | 7:35.0 |
Heat 3
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:46.8 | ||
| 2 | 6:58.2 | ||
| 3 | 7:02.2 | ||
| 4 | 7:55.0 | ||
| 5 | 8:14.0 |
Heat 4
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:23.6 | ||
| 2 | 6:35.4 | ||
| 3 | 6:59.8 | ||
| 4 | 7:02.4 |
Monday July 14, 1924: The fastest two in each semi-final and the faster of the two third-placed swimmer advanced to the final.
Semifinal 1
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:19.6 | QF | |
| 2 | 6:19.8 | QF | |
| 3 | 6:24.4 | qf | |
| 4 | 6:37.8 | ||
| 5 | 6:56.6 |
Semifinal 2
| Place | Swimmer | Time | Qual. |
|---|---|---|---|
| 1 | 6:23.8 | QF | |
| 2 | 6:26.6 | QF | |
| 3 | 6:34.0 | ||
| 4 | 6:55.2 |
| Place | Swimmer | Time |
|---|---|---|
| 1 | 6:02.2 OR | |
| 2 | 6:03.8 | |
| 3 | 6:04.8 | |
| 4 | 6:25.4 | |
| — | DNF |