| Date | 12 October 2018 |
|---|---|
| Status | YOG |
| Location | Natatorium, Parque Olímpico de la Juventud, Villa Soldati, Buenos Aires |
| Participants | 114 from 27 countries |
| Date | 12 October 2018 — 11:18 |
|---|---|
| Format | Top 8 advance to the final round. |
| Time | 11:18 |
|---|
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Israel |  ISR | 3:59.68 | ||
| Anastasia Gorbenko | 1:01.69 | ||||
| Gal Cohen Groumi | 1:05.78 | ||||
| Lea Polonsky | 1:01.85 | ||||
| Denis Loktev | 50.36 | ||||
| 2 | Switzerland |  SUI | 4:03.37 | ||
| Noè Ponti | 58.16 | ||||
| Elena Onieva Henrich | 1:13.75 | ||||
| Antonio Djakovic | 54.39 | ||||
| Leoni Richter | 57.07 | ||||
| 3 | Mexico |  MEX | 4:03.96 | ||
| Guillermo Cruz | 58.50 | ||||
| Andrés Puente | 1:03.72 | ||||
| Miriam Guevara | 1:02.08 | ||||
| Taydé Sansores | 59.66 | ||||
| 4 | Colombia |  COL | 4:18.04 | ||
| Anthony Rincón | 57.14 | ||||
| María Clara Román | 1:24.79 | ||||
| Valentina Becerra | 1:02.54 | ||||
| Juan Morales | 53.57 |
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Japan |  JPN | 3:54.14 | ||
| Miku Kojima | 1:03.96 | ||||
| Yu Hanaguruma | 1:01.80 | ||||
| Shinnosuke Ishikawa | 52.96 | ||||
| Nagisa Ikemoto | 55.42 | ||||
| 2 | Norway |  NOR | 3:57.33 | ||
| Ingeborg Løyning | 1:02.83 | ||||
| André Klippenberg Grindheim | 1:04.56 | ||||
| Tomoe Hvas | 52.34 | ||||
| Malene Rypestøl | 57.60 | ||||
| 3 | Australia |  AUS | 3:58.41 | ||
| Kaylee McKeown | 1:01.34 | ||||
| Chelsea Hodges | 1:10.37 | ||||
| Joseph Jackson | 56.63 | ||||
| Ashton Brinkworth | 50.07 | ||||
| 4 | Sweden |  SWE | 3:59.12 | ||
| Björn Seeliger | 57.57 | ||||
| Hannah Brunzell | 1:11.14 | ||||
| Sara Junevik | 1:00.40 | ||||
| Robin Hanson | 50.01 | ||||
| 5 | South Africa |  RSA | 4:01.33 | ||
| Hendrik Duvenhage | 57.58 | ||||
| Michael Houlie | 1:01.74 | ||||
| Duné Coetzee | 1:03.42 | ||||
| Christin Mundell | 58.59 | ||||
| 6 | Hong Kong, China |  HKG | 4:02.51 | ||
| Natalie Kan | 1:04.96 | ||||
| Marcus Mok | 1:04.31 | ||||
| Nicholas Owen Lim | 55.61 | ||||
| Tinky Ho | 57.63 | ||||
| 7 | Croatia |  CRO | 4:09.71 | ||
| Lucija Šulenta | 1:06.30 | ||||
| Nika Čulina | 1:13.81 | ||||
| Dominik Karačić | 56.66 | ||||
| Ognjen Marić | 52.94 | ||||
| 8 | Uzbekistan |  UZB | 4:18.99 | ||
| Akhmadjon Umurov | 1:02.12 | ||||
| Aleksey Sidorchuk | 1:05.80 | ||||
| Bibigul Menlibayeva | 1:10.40 | ||||
| Natalya Kritinina | 1:00.67 |
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | Canada |  CAN | 3:55.37 | ||
| Madison Broad | 1:02.17 | ||||
| Alexander Milanovich | 1:03.12 | ||||
| Josh Liendo | 54.55 | ||||
| Kyla Leibel | 55.53 | ||||
| 2 | France |  FRA | 3:57.80 | ||
| Lila Touili | 1:03.35 | ||||
| Clara Basso-Bert | 1:09.95 | ||||
| Sergueï Comte | 54.02 | ||||
| Jean-Marc Delices | 50.48 | ||||
| 3 | Germany |  GER | 3:58.07 | ||
| Julia Mrozinski | 1:03.64 | ||||
| Anna Kroniger | 1:11.71 | ||||
| Luca Armbruster | 53.15 | ||||
| Rafael Miroslaw | 49.57 | ||||
| 4 | Lithuania |  LTU | 4:04.02 | ||
| Alanas Tautkus | 57.04 | ||||
| Kotryna Teterevkova | 1:09.26 | ||||
| Agnė Šeleikaitė | 1:05.77 | ||||
| Arijus Pavlidi | 51.95 | ||||
| 5 | Argentina |  ARG | 4:04.39 | ||
| Juan Méndez | 58.27 | ||||
| María Alborzen | 1:11.99 | ||||
| Joaquín González | 57.72 | ||||
| Julieta Lema | 56.41 | ||||
| 6 | Republic of Moldova |  MDA | 4:04.74 | ||
| Tatiana Salcuțan | 1:02.60 | ||||
| Anastasia Moscenscaia | 1:11.36 | ||||
| Nichita Bortnicov | 57.80 | ||||
| Ivan Semidetnov | 52.98 | ||||
| 7 | Singapore |  SGP | 4:05.67 | ||
| Gan Ching Hwee | 1:08.15 | ||||
| Maximillian Ang | 1:04.72 | ||||
| Ong Jung Yi | 55.10 | ||||
| Christie May Chue | 57.70 | ||||
| 8 | Finland |  FIN | 4:07.84 | ||
| Roni Kallström | 58.10 | ||||
| Laura Lahtinen | 1:13.74 | ||||
| Nea-Amanda Heinola | 1:02.75 | ||||
| Alexey Belfer | 53.25 |
| Pos | Competitors | NOC | Time | ||
|---|---|---|---|---|---|
| 1 | People's Republic of China |  CHN | 3:53.10 | ||
| Peng Xuwei | 1:01.64 | ||||
| Sun Jiajun | 1:01.60 | ||||
| Hong Jinquan | 54.25 | ||||
| Yang Junxuan | 55.61 | ||||
| 2 | Russian Federation |  RUS | 3:54.42 | ||
| Polina Yegorova | 1:02.33 | ||||
| Vladislav Gerasimenko | 1:01.91 | ||||
| Daniil Markov | 54.89 | ||||
| Yelizaveta Klevanovich | 55.29 | ||||
| 3 | United States |  USA | 3:57.46 | ||
| Rhyan White | 1:02.17 | ||||
| Ethan Dang | 1:04.62 | ||||
| Jake Johnson | 54.30 | ||||
| Kate Douglass | 56.37 | ||||
| 4 | Poland |  POL | 3:58.76 | ||
| Aleksandra Knop | 1:03.83 | ||||
| Jan Kałusowski | 1:03.70 | ||||
| Jakub Majerski | 53.94 | ||||
| Kornelia Fiedkiewicz | 57.29 | ||||
| 5 | Brazil |  BRA | 3:59.45 | ||
| Fernanda de Goeij | 1:02.79 | ||||
| Vitor de Souza | 1:04.95 | ||||
| Maria Pessanha | 1:01.55 | ||||
| Lucas Costa Peixoto | 50.16 | ||||
| 6 | Kazakhstan |  KAZ | 4:15.60 | ||
| Anastasiya Rezvantseva | 1:05.41 | ||||
| Diana Nazarova | 1:20.34 | ||||
| Kirill Shatskov | 56.39 | ||||
| Alen Okhotinsky | 53.46 | ||||
| 7 | Chile |  CHI | 4:21.96 | ||
| Trinidad Ardiles | 1:05.38 | ||||
| Inés Marín | 1:23.60 | ||||
| Benjamín Schnapp | 57.98 | ||||
| Martín Valdivieso | 55.00 |
| Date | 12 October 2018 — 19:42 |
|---|
| Pos | Competitors | NOC | Time | |||||
|---|---|---|---|---|---|---|---|---|
| 1 | People's Republic of China | CHN | 3:49.79 | |||||
| Wang Guanbin • Sun Jiajun • Lin Xintong • Yang Junxuan | ||||||||
| 2 | Russian Federation | RUS | 3:51.46 | |||||
| Polina Yegorova • Anastasiya Makarova • Andrey Minakov • Kliment Kolesnikov | ||||||||
| 3 | Japan | JPN | 3:51.74 | |||||
| Miku Kojima • Taku Taniguchi • Shinnosuke Ishikawa • Nagisa Ikemoto | ||||||||
| 4 | Norway | NOR | 3:56.75 | |||||
| Ingeborg Løyning • André Klippenberg Grindheim • Tomoe Hvas • Malene Rypestøl | ||||||||
| 5 | United States | USA | 3:56.81 | |||||
| Rhyan White • Ethan Dang • Jake Johnson • Kate Douglass | ||||||||
| 6 | France | FRA | 3:57.25 | |||||
| Lila Touili • Clara Basso-Bert • Sergueï Comte • Jean-Marc Delices | ||||||||
| 7 | Canada | CAN | 3:57.32 | |||||
| Madison Broad • Alexander Milanovich • Josh Liendo • Kyla Leibel | ||||||||
| 8 | Germany | GER | 3:57.88 | |||||
| Julia Mrozinski • Anna Kroniger • Luca Armbruster • Rafael Miroslaw | ||||||||
