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 13 July 1924, to Tuesday 15 July 1924.
These were the standing world and Olympic records (in minutes) prior to the 1924 Summer Olympics.
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 13 July 1924: The fastest two in each heat and the fastest third-placed from across the heats advanced.
Heat 1
Heat 2
Heat 3
Heat 4
Monday 14 July 1924: The fastest two in each semi-final and the faster of the two third-placed swimmer advanced to the final.
Semifinal 1
Semifinal 2
Tuesday 15 July 1924: