| Date | 17 August 2010 | 
|---|---|
| Status | YOG | 
| Location | Singapore Sports School, Singapore | 
| Participants | 44 from 11 countries | 
Top 8 times advanced to final.
| Pos | Lane | Swimmer | NOC | Time | Exchange (Pos) | ||||
|---|---|---|---|---|---|---|---|---|---|
| =1 | – | United States |  USA | 3:27.11 | |||||
| Erich Peske | – | – (–) | |||||||
| Austin Ringquist | – | – (–) | |||||||
| Steve Schmuhl | – | – (–) | |||||||
| Thomas Stephens | – | – (–) | |||||||
| =1 | – | People's Republic of China |  CHN | 3:27.11 | |||||
| Dai Jun | – | – (–) | |||||||
| He Jianbin | – | – (–) | |||||||
| Sun Bowei | – | – (–) | |||||||
| Wang Ximing | – | – (–) | |||||||
| 3 | – | Russian Federation |  RUS | 3:27.21 | |||||
| Aleksey Atsapkin | – | – (–) | |||||||
| Ilya Lemayev | – | – (–) | |||||||
| Anton Lobanov | – | – (–) | |||||||
| Andrey Ushakov | – | – (–) | |||||||
| 4 | – | Singapore |  SGP | 3:28.66 | |||||
| Clement Lim | – | – (–) | |||||||
| Rainer Ng | – | – (–) | |||||||
| Pang Sheng Jun | – | – (–) | |||||||
| Arren Quek | – | – (–) | |||||||
| 5 | – | Canada |  CAN | 3:28.91 | |||||
| Jeremy Bagshaw | – | – (–) | |||||||
| Chad Bobrosky | – | – (–) | |||||||
| Thomas Jobin | – | – (–) | |||||||
| Kyle McIntee | – | – (–) | |||||||
| – | Italy |  ITA | – | 
| Pos | Lane | Swimmer | NOC | Time | Exchange (Pos) | ||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | – | Australia |  AUS | 3:25.91 | |||||
| Max Ackermann | – | – (–) | |||||||
| Justin James | – | – (–) | |||||||
| Nick Schafer | – | – (–) | |||||||
| Kenneth To | – | – (–) | |||||||
| 2 | – | South Africa |  RSA | 3:26.98 | |||||
| Dylan Bosch | – | – (–) | |||||||
| Pierre Keune | – | – (–) | |||||||
| Chad le Clos | – | – (–) | |||||||
| Murray McDougall | – | – (–) | |||||||
| 3 | – | France |  FRA | 3:27.19 | |||||
| Jordan Coelho | – | – (–) | |||||||
| Mehdy Metella | – | – (–) | |||||||
| Ganesh Pedurand | – | – (–) | |||||||
| Thomas Rabeisen | – | – (–) | |||||||
| 4 | – | Germany |  GER | 3:30.35 | |||||
| Christian Diener | – | – (–) | |||||||
| Melvin Herrmann | – | – (–) | |||||||
| Kevin Leithold | – | – (–) | |||||||
| Christian vom Lehn | – | – (–) | |||||||
| 5 | – | Japan |  JPN | 3:32.20 | |||||
| Jun Isaji | – | – (–) | |||||||
| Tatsunari Shoda | – | – (–) | |||||||
| Takahiro Tsutsumi | – | – (–) | |||||||
| Yusuke Yamagishi | – | – (–) | |||||||
| 6 | – | Brazil |  BRA | 3:32.64 | |||||
| Vinícius Borges | – | – (–) | |||||||
| Pedro Costa | – | – (–) | |||||||
| Pedro de Souza | – | – (–) | |||||||
| Victor Rodrigues | – | – (–) | 
| Pos | Lane | Swimmer | NOC | Time | Exchange (Pos) | ||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | – | Russian Federation |  RUS | 3:23.91 | |||||
| Aleksey Atsapkin | – | – (–) | |||||||
| Ilya Lemayev | – | – (–) | |||||||
| Anton Lobanov | – | – (–) | |||||||
| Andrey Ushakov | – | – (–) | |||||||
| 2 | – | People's Republic of China |  CHN | 3:24.46 | |||||
| Dai Jun | – | – (–) | |||||||
| He Jianbin | – | – (–) | |||||||
| Sun Bowei | – | – (–) | |||||||
| Wang Ximing | – | – (–) | |||||||
| 3 | – | South Africa |  RSA | 3:24.66 | |||||
| Dylan Bosch | – | – (–) | |||||||
| Pierre Keune | – | – (–) | |||||||
| Chad le Clos | – | – (–) | |||||||
| Murray McDougall | – | – (–) | |||||||
| 4 | – | Australia |  AUS | 3:25.51 | |||||
| Max Ackermann | – | – (–) | |||||||
| Justin James | – | – (–) | |||||||
| Nick Schafer | – | – (–) | |||||||
| Kenneth To | – | – (–) | |||||||
| 5 | – | United States |  USA | 3:25.56 | |||||
| Erich Peske | – | – (–) | |||||||
| Austin Ringquist | – | – (–) | |||||||
| Steve Schmuhl | – | – (–) | |||||||
| Thomas Stephens | – | – (–) | |||||||
| 6 | – | France |  FRA | 3:25.63 | |||||
| Jordan Coelho | – | – (–) | |||||||
| Mehdy Metella | – | – (–) | |||||||
| Ganesh Pedurand | – | – (–) | |||||||
| Thomas Rabeisen | – | – (–) | |||||||
| 7 | – | Singapore |  SGP | 3:27.46 | |||||
| Clement Lim | – | – (–) | |||||||
| Rainer Ng | – | – (–) | |||||||
| Pang Sheng Jun | – | – (–) | |||||||
| Arren Quek | – | – (–) | |||||||
| 8 | – | Canada |  CAN | 3:28.68 | |||||
| Jeremy Bagshaw | – | – (–) | |||||||
| Chad Bobrosky | – | – (–) | |||||||
| Thomas Jobin | – | – (–) | |||||||
| Kyle McIntee | – | – (–) |