| Final | team | time | gap | L | Y | | 1. Clare Dennis |  Australia | 3:06.3 | | | 16 | | 2. Hideko Maehata |  Japan | 3:06.4 | +2.5s | | 18 | | 3. Else Jacobsen |  Denmark | 3:07.1 | +3.9s | | 21 | | 4. Margery Hinton |  Great Britain | 3:11.7 | +5.3s | | 17 | | 5. Margaret Hoffman |  United States | 3:11.8 | +6.5s | | 21 | | 6. Anne Govednik | United States | 3:16.0 | +7.7s | | 16 | | 7. Jane Cadwell | United States | 3:18.2 | +11.8s | | 17 |
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Heats - Sunday, 7th August | | First 2 from each Heat and Best 3rd time advanced to Final. Not enough swimmers to 3 Rounds. |
| Heat 1 | team | time | gap | L | Y | Rk | | 1. Clare Dennis | Australia | 3:08.20 | OR | 2 | 16 | 1. | | 2. Margaret Hoffman | United States | 3:14.7 | +6.5s | 5 | 21 | 5. | | 3. Dorothy Prior-Schute |  Canada | 3:33.2 | +25.0s | 4 | | 10. | | -. Jenny Maakal |  South Africa | DNS | | 3 | 19 | |
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| Heat 2 | team | time | gap | L | Y | Rk | | 1. Else Jacobsen | Denmark | 3:12.10 | +3.9s | 2 | 21 | 3. | | 2. Anne Govednik | United States | 3:15.9 | +7.7s | 5 | 16 | 6. | | 3. Cecelia Wolstenholme | Great Britain | 3:24.5 | +16.3s | 4 | 17 | 8. | | 4. Janet Sheather | Canada | 3:46.1 | +37.9s | 3 | 19 | 11. |
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| Heat 3 | team | time | gap | L | Y | Rk | | 1. Hideko Maehata | Japan | 3:10.70 | +2.5s | 3 | 18 | 2. | | 2. Margery Hinton | Great Britain | 3:13.5 | +5.3s | 2 | 17 | 4. | | 3. Jane Cadwell | United States | 3:20.0 | +11.8s | 5 | 17 | 7. | | 4. Maria Lenk |  Brazil | 3:26.6 | +18.4s | 4 | 17 | 9. |
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