| Date | 31 July – 4 August 1948 |
|---|---|
| Status | Olympic |
| Location | Wembley Arena, Wembley, London |
| Participants | 41 from 21 countries |
Frenchman Alex Jany entered the competition as world record holder and a solid favourite for all three freestyle titles but he had disappointed in the sprint event and would withdraw from the 1500m. Jany did reach the final of the 400m but his qualification was overshadowed by a duo of Americans, Bill Smith and Jimmy McLane, and by the 100m bronze medallist, Hungary’s Géza Kádas. It was Smith who set the pace in the final and only his team-mate McLane, who started slowly but then moved through the pack, could challenge him. At the 200m mark the two Americans battled for the lead but Smith had enough in hand to pull away to a comfortable victory breaking the Olympic record in the process. McLane finished in second with the Australian John Marshal holding off the Hungarian challenge for the bronze medal. Jany finished sixth in a time fully fifteen seconds off his best. Bill Smith had contracted Typhoid as a child and took to swimming as a way to rebuild his strength. Hironoshin Furuhashi of Japan set a world record for this event in 1949 and would have been amongst the favourites if Japan had been permitted to compete.
| Pos | Number | Competitor | NOC | R1 | SF | Final | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 143 | Bill Smith | USA | 4:45.3 (1 h6) | 4:48.4 (2 h2) | 4:41.0 (1) | Gold | ||
| 2 | 142 | Jimmy McLane | USA | 4:42.2 (1 h1) | 4:49.5 (1 h1) | 4:43.4 (2) | Silver | ||
| 3 | 116 | John Marshall | AUS | 4:51.4 (2 h6) | 4:50.0 (2 h1) | 4:47.4 (3) | Bronze | ||
| 4 | 27 | Géza Kádas | HUN | 4:52.8 (1 h5) | 4:47.8 (1 h2) | 4:49.4 (4) | |||
| 5 | – | György Mitró | HUN | 4:56.0 (1 h4) | 4:50.8 (3 h1) | 4:49.9 (5) | |||
| 6 | 20 | Alex Jany | FRA | 4:53.3 (2 h3) | 4:51.3 (3 h2) | 4:51.4 (6) | |||
| 7 | 128 | Jack Hale | GBR | 4:53.3 (1 h3) | 4:51.4 (4 h1) | 4:55.9 (7) | |||
| 8 | 113 | Alfredo Yantorno | ARG | 4:53.8 (1 h2) | 4:57.3 (4 h2) | 4:58.7 (8) | |||
| 9 | – | Bill Heusner | USA | 4:58.3 (2 h4) | 4:57.4 (5 h2) | – | |||
| 10 | 146 | Marijan Stipetić | YUG | 5:01.4 (3 h3) | 4:58.6 (5 h1) | – | |||
| =11 | 123 | Miroslav Bartůšek | TCH | 4:57.9 (3 h2) | 4:58.7 (6 h1) | – | |||
| =11 | 145 | Janko Puhar | YUG | 5:00.8 (3 h6) | 4:58.7 (6 h2) | – | |||
| 13 | 147 | Branko Vidović | YUG | 4:58.7 (3 h4) | 4:59.4 (7 h1) | – | |||
| 14 | – | Don Johnston | RSA | 4:57.4 (2 h2) | 4:59.5 (7 h2) | – | |||
| 15 | 140 | Per-Olof Östrand | SWE | 4:53.5 (2 h5) | – (DNS h1) | – | |||
| 16 | 131 | Imre Nyéki | HUN | 5:01.8 (2 h1) | – (DNS h2) | – | |||
| 17 | – | Luis González | COL | 5:02.1 (4 h6) | – | – | |||
| 18 | 127 | Roy Botham | GBR | 5:03.4 (3 h1) | – | – | |||
| 19 | 126 | Jo Bernardo | FRA | 5:03.8 (4 h2) | – | – | |||
| 20 | 144 | Florbel Pérez | URU | 5:04.7 (3 h5) | – | – | |||
| 21 | 125 | René Cornu | FRA | 5:05.2 (4 h5) | – | – | |||
| 22 | 114 | José Durañona | ARG | 5:05.8 (4 h1) | – | – | |||
| 23 | 115 | Garrick Agnew | AUS | 5:06.1 (4 h3) | – | – | |||
| 24 | 122 | Luis Child | COL | 5:08.5 (5 h3) | – | – | |||
| 25 | 139 | Isidoro Martínez-Vela | ESP | 5:10.0 (4 h4) | – | – | |||
| 26 | 112 | Juan Garay | ARG | 5:10.4 (5 h4) | – | – | |||
| 27 | 120 | Doug Gibson | CAN | 5:13.4 (5 h2) | – | – | |||
| 28 | 38 | Isidoro Pérez | ESP | 5:16.1 (5 h5) | – | – | |||
| 29 | 30 | Ari Guðmundsson | ISL | 5:16.2 (5 h6) | – | – | |||
| 30 | 138 | Alejandro Febrero | ESP | 5:16.9 (5 h1) | – | – | |||
| 31 | 129 | Tom Holt | GBR | 5:20.7 (6 h6) | – | – | |||
| 32 | 5 | Derek Oatway | BER | 5:20.9 (6 h4) | – | – | |||
| =33 | 119 | Allen Gilchrist | CAN | 5:21.5 (6 h3) | – | – | |||
| =33 | 136 | Sambiao Basanung | PHI | 5:21.5 (6 h5) | – | – | |||
| 35 | 43 | Walter Schneider | SUI | 5:25.5 (6 h2) | – | – | |||
| 36 | 118 | Walter Bardgett | BER | 5:37.2 (7 h2) | – | – | |||
| 37 | 117 | Robert Cook | BER | 5:37.9 (6 h1) | – | – | |||
| 38 | 132 | Bimal Chandra | IND | 5:38.6 (7 h4) | – | – | |||
| 39 | 535 | Jack Hakim | EGY | 5:40.3 (7 h1) | – | – | |||
| 40 | 135 | Anwar Aziz Chaudhry | PAK | 6:17.4 (7 h3) | – | – | |||
| 41 | – | Sultan Karim Ali | PAK | 7:16.9 (7 h6) | – | – | |||
| 15 | Taha El-Gamal | EGY | – (DNS h4) | – | – | ||||
| 33 | Sachin Nag | IND | – (DNS h5) | – | – | ||||
| 124 | Liam Jones | IRL | – (DNS h1) | – | – | ||||
| 133 | Ramón Bravo | MEX | – (DNS h5) | – | – | ||||
| 134 | Ángel Maldonado | MEX | – (DNS h2) | – | – |
| Date | 31 July – 2 August 1948 |
|---|---|
| Format | Top two in each heat and the next four fastest advanced to the semi-finals. |
| Time | 31 July 1948 — 19:00 |
|---|
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Jimmy McLane | USA | 4:42.2 | ||
| 2 | – | Imre Nyéki | HUN | 5:01.8 | ||
| 3 | – | Roy Botham | GBR | 5:03.4 | ||
| 4 | – | José Durañona | ARG | 5:05.8 | ||
| 5 | – | Alejandro Febrero | ESP | 5:16.9 | ||
| 6 | – | Robert Cook | BER | 5:37.9 | ||
| 7 | – | Jack Hakim | EGY | 5:40.3 | ||
| – | Liam Jones | IRL | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Alfredo Yantorno | ARG | 4:53.8 | ||
| 2 | – | Don Johnston | RSA | 4:57.4 | ||
| 3 | – | Miroslav Bartůšek | TCH | 4:57.9 | ||
| 4 | – | Jo Bernardo | FRA | 5:03.8 | ||
| 5 | – | Doug Gibson | CAN | 5:13.4 | ||
| 6 | – | Walter Schneider | SUI | 5:25.5 | ||
| 7 | – | Walter Bardgett | BER | 5:37.2 | ||
| – | Ángel Maldonado | MEX | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Jack Hale | GBR | 4:53.3 | ||
| 2 | – | Alex Jany | FRA | 4:53.3 | ||
| 3 | – | Marijan Stipetić | YUG | 5:01.4 | ||
| 4 | – | Garrick Agnew | AUS | 5:06.1 | ||
| 5 | – | Luis Child | COL | 5:08.5 | ||
| 6 | – | Allen Gilchrist | CAN | 5:21.5 | ||
| 7 | – | Anwar Aziz Chaudhry | PAK | 6:17.4 |
| Time | 2 August 1948 — 19:00 |
|---|
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | György Mitró | HUN | 4:56.0 | ||
| 2 | – | Bill Heusner | USA | 4:58.3 | ||
| 3 | – | Branko Vidović | YUG | 4:58.7 | ||
| 4 | – | Isidoro Martínez-Vela | ESP | 5:10.0 | ||
| 5 | – | Juan Garay | ARG | 5:10.4 | ||
| 6 | – | Derek Oatway | BER | 5:20.9 | ||
| 7 | – | Bimal Chandra | IND | 5:38.6 | ||
| – | Taha El-Gamal | EGY | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Géza Kádas | HUN | 4:52.8 | ||
| 2 | – | Per-Olof Östrand | SWE | 4:53.5 | ||
| 3 | – | Florbel Pérez | URU | 5:04.7 | ||
| 4 | – | René Cornu | FRA | 5:05.2 | ||
| 5 | – | Isidoro Pérez | ESP | 5:16.1 | ||
| 6 | – | Sambiao Basanung | PHI | 5:21.5 | ||
| – | Sachin Nag | IND | – | |||
| – | Ramón Bravo | MEX | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Bill Smith | USA | 4:45.3 | ||
| 2 | – | John Marshall | AUS | 4:51.4 | ||
| 3 | – | Janko Puhar | YUG | 5:00.8 | ||
| 4 | – | Luis González | COL | 5:02.1 | ||
| 5 | – | Ari Guðmundsson | ISL | 5:16.2 | ||
| 6 | – | Tom Holt | GBR | 5:20.7 | ||
| 7 | – | Sultan Karim Ali | PAK | 7:16.9 |
| Date | 2 August 1948 — 21:00 |
|---|---|
| Format | Top two in each heat and the next four fastest advanced to the final. |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Géza Kádas | HUN | 4:47.8 | ||
| 2 | – | Bill Smith | USA | 4:48.4 | ||
| 3 | – | Jimmy McLane | USA | 4:49.5 | ||
| 4 | – | John Marshall | AUS | 4:50.0 | ||
| 5 | – | György Mitró | HUN | 4:50.8 | ||
| 6 | – | Alex Jany | FRA | 4:51.3 | ||
| 7 | – | Jack Hale | GBR | 4:51.4 | ||
| 8 | – | Alfredo Yantorno | ARG | 4:57.3 | ||
| 9 | – | Bill Heusner | USA | 4:57.4 | ||
| 10 | – | Marijan Stipetić | YUG | 4:58.6 | ||
| =11 | – | Miroslav Bartůšek | TCH | 4:58.7 | ||
| =11 | – | Janko Puhar | YUG | 4:58.7 | ||
| 13 | – | Branko Vidović | YUG | 4:59.4 | ||
| 14 | – | Don Johnston | RSA | 4:59.5 | ||
| – | Per-Olof Östrand | SWE | – | |||
| – | Imre Nyéki | HUN | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Jimmy McLane | USA | 4:49.5 | ||
| 2 | – | John Marshall | AUS | 4:50.0 | ||
| 3 | – | György Mitró | HUN | 4:50.8 | ||
| 4 | – | Jack Hale | GBR | 4:51.4 | ||
| 5 | – | Marijan Stipetić | YUG | 4:58.6 | ||
| 6 | – | Miroslav Bartůšek | TCH | 4:58.7 | ||
| 7 | – | Branko Vidović | YUG | 4:59.4 | ||
| – | Per-Olof Östrand | SWE | – |
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Géza Kádas | HUN | 4:47.8 | ||
| 2 | – | Bill Smith | USA | 4:48.4 | ||
| 3 | – | Alex Jany | FRA | 4:51.3 | ||
| 4 | – | Alfredo Yantorno | ARG | 4:57.3 | ||
| 5 | – | Bill Heusner | USA | 4:57.4 | ||
| 6 | – | Janko Puhar | YUG | 4:58.7 | ||
| 7 | – | Don Johnston | RSA | 4:59.5 | ||
| – | Imre Nyéki | HUN | – |
| Date | 4 August 1948 — 19:00 |
|---|
| Pos | Lane | Competitor | NOC | Time | ||
|---|---|---|---|---|---|---|
| 1 | – | Bill Smith | USA | 4:41.0 | ||
| 2 | – | Jimmy McLane | USA | 4:43.4 | ||
| 3 | – | John Marshall | AUS | 4:47.4 | ||
| 4 | – | Géza Kádas | HUN | 4:49.4 | ||
| 5 | – | György Mitró | HUN | 4:49.9 | ||
| 6 | – | Alex Jany | FRA | 4:51.4 | ||
| 7 | – | Jack Hale | GBR | 4:55.9 | ||
| 8 | – | Alfredo Yantorno | ARG | 4:58.7 |