| Date | 10 October 2018 |
|---|---|
| Status | YOG |
| Location | Natatorium, Parque Olímpico de la Juventud, Villa Soldati, Buenos Aires |
| Participants | 36 from 9 countries |
| Date | 10 October 2018 — 11:01 |
|---|---|
| Format | Top 8 advance to the final round. |
| Time | 11:01 |
|---|
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Poland | POL | 3:45.31 | ||
| Jakub Kraska | 56.62 | ||||
| Jan Kałusowski | 1:03.71 | ||||
| Jakub Majerski | 52.64 | ||||
| Bartłomiej Koziejko | 52.34 | ||||
| 2 | Japan | JPN | 3:45.34 | ||
| Keisuke Yoshida | 59.16 | ||||
| Yu Hanaguruma | 1:01.66 | ||||
| Shinnosuke Ishikawa | 52.41 | ||||
| Taku Taniguchi | 52.11 | ||||
| 3 | Hungary | HUN | 3:45.41 | ||
| Gábor Zombori | 56.76 | ||||
| Sebestyén Böhm | 1:03.56 | ||||
| Kristóf Milák | 52.58 | ||||
| Ákos Kalmár | 52.51 | ||||
| 4 | Canada | CAN | 3:46.23 | ||
| Sebastian Somerset | 57.24 | ||||
| Alexander Milanovich | 1:03.51 | ||||
| Josh Liendo | 53.58 | ||||
| Finlay Knox | 51.90 | ||||
| 5 | Italy | ITA | 3:47.31 | ||
| Johannes Calloni | 57.13 | ||||
| Thomas Ceccon | 1:05.77 | ||||
| Federico Burdisso | 52.58 | ||||
| Marco De Tullio | 51.83 |
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Russian Federation | RUS | 3:43.50 | ||
| Kliment Kolesnikov | 53.62 | ||||
| Vladislav Gerasimenko | 1:02.27 | ||||
| Andrey Minakov | 55.58 | ||||
| Daniil Markov | 52.03 | ||||
| 2 | People's Republic of China | CHN | 3:45.74 | ||
| Wang Guanbin | 56.93 | ||||
| Sun Jiajun | 1:02.65 | ||||
| Shen Jiahao | 53.34 | ||||
| Hong Jinquan | 52.82 | ||||
| 3 | South Africa | RSA | 3:47.78 | ||
| Hendrik Duvenhage | 58.80 | ||||
| Michael Houlie | 1:00.78 | ||||
| Ethan du Preez | 56.97 | ||||
| Gabriel Nortje | 51.23 | ||||
| 4 | United States | USA | 3:47.91 | ||
| Ethan Harder | 57.01 | ||||
| Ethan Dang | 1:03.47 | ||||
| Jake Johnson | 54.97 | ||||
| Will Barao | 52.46 | ||||
| Australia | AUS | – | |||
| Brazil | BRA | – |
| Date | 10 October 2018 — 19:32 |
|---|
| Pos | Competitors | NOC | Time | |||||
|---|---|---|---|---|---|---|---|---|
| 1 | Russian Federation | RUS | 3:35.17 | |||||
| Kliment Kolesnikov • Vladislav Gerasimenko • Andrey Minakov • Daniil Markov | ||||||||
| 2 | People's Republic of China | CHN | 3:38.65 | |||||
| Wang Guanbin • Sun Jiajun • Shen Jiahao • Hong Jinquan | ||||||||
| 3 | Poland | POL | 3:41.51 | |||||
| Jakub Kraska • Jan Kałusowski • Jakub Majerski • Bartłomiej Koziejko | ||||||||
| 4 | Hungary | HUN | 3:43.60 | |||||
| Gábor Zombori • Sebestyén Böhm • Kristóf Milák • Ákos Kalmár | ||||||||
| 5 | Italy | ITA | 3:45.23 | |||||
| Johannes Calloni • Thomas Ceccon • Federico Burdisso • Marco De Tullio | ||||||||
| 6 | Canada | CAN | 3:45.45 | |||||
| Sebastian Somerset • Alexander Milanovich • Josh Liendo • Finlay Knox | ||||||||
| 7 | South Africa | RSA | 3:45.90 | |||||
| Hendrik Duvenhage • Michael Houlie • Ethan du Preez • Gabriel Nortje | ||||||||
| Japan | JPN | – | ||||||
| Keisuke Yoshida • Yu Hanaguruma • Shinnosuke Ishikawa • Taku Taniguchi | ||||||||