| Date | 23 – 25 August 1920 |
|---|---|
| Status | Olympic |
| Location | Zwemstadion van Antwerpen, Antwerpen |
| Participants | 19 from 9 countries |
The world and Olympic record was 1:16.2, which had been set by Fanny Durack, who won the 1912 Olympic gold medal. The United States’ Ethelda Bleibtrey was a laughable winner of this event. She set a world record of 1:14.4 in the heats, and then improved that record in the finals, winning by almost 3½ seconds. Bleibtrey had only a brief career as an amateur but, between 1920 and 1922, she was undefeated and won an AAU title at every distance, from 50 yards to the long distance event.
| Pos | Competitor | NOC | SF | Final | |||
|---|---|---|---|---|---|---|---|
| 1 | Ethelda Bleibtrey |  USA | 1:14.4 (1 h3) | 1:13.6 (1) | Gold | ||
| 2 | Irene Guest | USA | 1:18.8 (1 h2) | 1:17.0 (2) | Silver | ||
| 3 | Frances Schroth | USA | 1:18.0 (1 h1) | 1:17.2 (3) | Bronze | ||
| 4 | Connie Jeans |  GBR | 1:20.8 (2 h2) | 1:22.8 (4) | |||
| 5 | Violet Walrond |  NZL | 1:21.4 (3 h2) | – (5) | |||
| 6 | Jane Gylling |  SWE | 1:25.6 (2 h3) | – (6) | |||
| AC r2/2 | Charlotte Boyle | USA | 1:20.4 (2 h1) | – ( | DNF | ||
| 3 h1 r1/2 | Rie Beisenherz |  NED | 1:22.6 (3 h1) | – | |||
| 3 h3 r1/2 | Grace McKenzie | GBR | 1:27.4 (3 h3) | – | |||
| 4 h1 r1/2 | Yvonne Degraine |  FRA | – (4 h1) | – | |||
| 4 h2 r1/2 | Germaine Van Dievoet |  BEL | – (4 h2) | – | |||
| 4 h3 r1/2 | Ernestine Lebrun | FRA | – (4 h3) | – | |||
| 5 h1 r1/2 | Aina Berg | SWE | – (5 h1) | – | |||
| 5 h2 r1/2 | Suzanne Wurtz | FRA | – (5 h2) | – | |||
| 5 h3 r1/2 | Blanche Nash |  RSA | – (5 h3) | – | |||
| 6 h1 r1/2 | Lillian Birkenhead | GBR | – (6 h1) | – | |||
| 6 h2 r1/2 | Carin Nilsson | SWE | – (6 h2) | – | |||
| 6 h3 r1/2 | Lily Beaurepaire |  AUS | – (6 h3) | – | |||
| 7 h2 r1/2 | Charlotte Radcliffe | GBR | – (7 h2) | – |
| Date | 23 August 1920 — 15:45 |
|---|---|
| Format | Top 2 in each heat with the fastest 3rd place advanced to the final round. |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Frances Schroth | USA | 1:18.0 | ||
| 2 | Charlotte Boyle | USA | 1:20.4 | ||
| 3 | Rie Beisenherz | NED | 1:22.6 | ||
| 4 | Yvonne Degraine | FRA | – | ||
| 5 | Aina Berg | SWE | – | ||
| 6 | Lillian Birkenhead | GBR | – |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Irene Guest | USA | 1:18.8 | ||
| 2 | Connie Jeans | GBR | 1:20.8 | ||
| 3 | Violet Walrond | NZL | 1:21.4 | ||
| 4 | Germaine Van Dievoet | BEL | – | ||
| 5 | Suzanne Wurtz | FRA | – | ||
| 6 | Carin Nilsson | SWE | – | ||
| 7 | Charlotte Radcliffe | GBR | – |
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Ethelda Bleibtrey | USA | 1:14.4 | ||
| 2 | Jane Gylling | SWE | 1:25.6 | ||
| 3 | Grace McKenzie | GBR | 1:27.4 | ||
| 4 | Ernestine Lebrun | FRA | – | ||
| 5 | Blanche Nash | RSA | – | ||
| 6 | Lily Beaurepaire | AUS | – |
| Date | 25 August 1920 — 15:30 |
|---|
| Pos | Competitor | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Ethelda Bleibtrey | USA | 1:13.6 | ||
| 2 | Irene Guest | USA | 1:17.0 | ||
| 3 | Frances Schroth | USA | 1:17.2 | ||
| 4 | Connie Jeans | GBR | 1:22.8 | ||
| 5 | Violet Walrond | NZL | – | ||
| 6 | Jane Gylling | SWE | – | ||
| Charlotte Boyle | USA | – | 1 |
