Swimming at the 2012 Summer Games: Previous Summer Games
Host City: London, Great Britain
Venue(s): London Aquatics Centre, Olympic Park, Stratford, London
Date Started: July 31, 2012
Date Finished: July 31, 2012
Format: Fastest eight swimmers advanced to final
| Gold: | Nathan Adrian |
| Silver: | James Magnussen |
| Bronze: | Brent Hayden |
| Rank | Athlete | Age | Team | NOC | T | RT | |
|---|---|---|---|---|---|---|---|
| 1 | James Magnussen | 21 | Australia | AUS | 47.63 | 0.72 | Q |
| 2 | César Cielo Filho | 25 | Brazil | BRA | 48.17 | 0.68 | Q |
| 3 | Nikita Lobintsev | 23 | Russia | RUS | 48.38 | 0.73 | Q |
| 4 | Gideon Louw | 24 | South Africa | RSA | 48.44 | 0.76 | |
| 5 | Fabien Gilot | 28 | France | FRA | 48.49 | 0.68 | |
| 6 | James Roberts | 21 | Australia | AUS | 48.57 | 0.65 | |
| 7 | Brett Fraser | 22 | Cayman Islands | CAY | 48.92 | 0.64 | |
| 8 | Shaune Fraser | 24 | Cayman Islands | CAY | 49.07 | 0.67 |
| Rank | Athlete | Age | Team | NOC | T | RT | |
|---|---|---|---|---|---|---|---|
| 1 | Nathan Adrian | 23 | United States | USA | 47.97 | 0.66 | Q |
| 2 | Hanser García | 23 | Cuba | CUB | 48.04 | 0.69 | Q |
| 3 | Sebastiaan Verschuren | 23 | Netherlands | NED | 48.13 | 0.69 | Q |
| 4 | Brent Hayden | 28 | Canada | CAN | 48.21 | 0.65 | Q |
| 5 | Yannick Agnel | 20 | France | FRA | 48.23 | 0.69 | Q |
| 6 | Konrad Czerniak | 23 | Poland | POL | 48.44 | 0.76 | |
| 7 | Pieter Timmers | 24 | Belgium | BEL | 48.57 | 0.75 | |
| 8 | Cullen Jones | 28 | United States | USA | 48.60 | 0.69 |