1 | Australia (Flynn Southam, Jack Cartwright, Madison Wilson, Meg Harris) | 3:21.88 Q |
2 | United States (Matt King, Chris Guiliano, Olivia Smoliga, Bella Sims) | 3:23.85 Q |
3 | Italy (Manuel Frigo, Alessandro Miressi, Costanza Cocconcelli, Sofia Morini) | 3:24.39 Q |
4 | Great Britain (Jacob Henry Whittle, Thomas Dean, Lucy Hope, Freya Anderson) | 3:24.41 Q |
5 | Canada (Ruslan Gaziev, Javier Acevedo, Mary-Sophie Harvey, Taylor Ruck) | 3:24.63 Q |
6 | Japan (Tomonobu Gomi, Katsumi Nakamura, Nagisa Ikemoto, Yume Jinno) | 3:26.47 Q |
7 | Brazil (Guilherme Santos, Felipe Souza, Ana Carolina Vieira, Stephanie Balduccini) | 3:26.48 Q |
8 | Germany (Peter Varjasi, Rafael Miroslaw, Nele Schulze, Nina Holt) | 3:26.78 Q |
9 | China (Jintong Yang, Yicun Ji, Junxuan Yang, Qingfeng Wu) | 3:27.08 |
10 | France (Max Berg, Guillaume Guth, Assia Touati, Lison Nowaczyk) | 3:27.62 |
11 | Sweden (Robin Hanson, Bjoern Seeliger, Louise Hansson, Sofia Aastedt) | 3:27.64 |
12 | Netherlands (Kenzo Simons, Caspar Corbeau, Milou Van Wijk, Sam Henke Van Nunen) | 3:27.83 |
13 | South Korea (Yuchan Ji, Jaehoon Yang, Yeonkyung Hur, Soeun Jeong) | 3:27.99 |
14 | Israel (Denis Loktev, Meiron Cheruti, Anastasia Gorbenko, Daria Golovaty) | 3:28.78 |
15 | Greece (Andreas Vazaios, Stergios-Marios Bilas, Theodora Drakou, Maria Thaleia Drasidou) | 3:28.96 |
16 | New Zealand (Cameron Gray, Carter Swift, Helena Gasson, Chelsey Edwards) | 3:29.05 |
17 | Spain (Sergio de Celis Montalban, Carles Coll Marti, Carmen Weiler Sastre, Ainhoa Campabadal Amezcua) | 3:29.06 |
18 | South Africa (Clayton Jimmie, Aimee Canny, Roland Mark Schoeman, Rebecca Meder) | 3:30.16 |
19 | Mexico (Jorge Andres Iga Cesar, Andres Dupont Cabrera, Athena Meneses Kovacs, Tayde Ana Sofia Revilak Fonseca) | 3:30.77 |
20 | Singapore (Jonathan Eu Jin Tan, Mikkel Lee, Ting Wen Quah, Jing Wen Quah) | 3:30.89 |
21 | Slovakia (Matej Dusa, Frantisek Jablcnik, Tamara Potocka, Teresa Ivan) | 3:31.41 |
22 | Hong-Kong (Shiu Yue Lau, Ian Yentou Ho, Camille Cheng, Chloe Cheng) | 3:34.96 |
23 | Aruba (Mikel Schreuders, Bransly Dirksz, Elisabeth Timmer, Chloe Farro) | 3:37.89 |
24 | Bermuda (Benedict Parfit, Jack Harvey, Maddy Moore, Emma Harvey) | 3:38.86 |
25 | Thailand (Dulyawat Kaewsriyong, Tonnam Kanteemool, Kamonchanok Kwanmuang, Jenjira Srisa-Ard) | 3:39.38 |
26 | Suspended Member Federation (Monyo Maina, Swaleh Abubakar Talib, Emily Muteti, Maria Brunlehner) | 3:42.58 |
27 | Bahamas (Lamar Taylor, Davante Carey, Rhanishka Gibbs, Zaylie Elizabeth Thompson) | 3:43.19 |
28 | Armenia (Artur Barseghyan, Ashot Chakhoyan, Ani Poghosyan, Varsenik Manucharyan) | 3:44.95 |
29 | Antigua and Barbuda (Stefano Mitchell, Jadon Wuilliez, Bianca Mitchell, Aunjelique Liddie) | 3:45.38 |
30 | Uganda (Tendo Mukalazi, Adnan Kabuye, Tara Ann Mary Naluwoza, Kirabo Namutebi) | 3:47.80 |
31 | Nigeria (Clinton Opute, Colins Obi Ebingha, Dorcas Abeng, Adaku Nwandu) | 3:48.83 |
32 | Samoa (Olivia Borg, Brandon Schuster, Kaiya Brown, Kokoro Frost) | 3:49.29 |
33 | Panama (Jeancarlo Calderon Harper, Emily Emily Santos, Carolina Cermelli, Bernhard Tyler Christianson) | 3:53.19 |
34 | Guam (James Hendrix, Mia Lee, Amaya Bollinger, Israel Poppe) | 3:54.54 |
35 | Bahrain (Ali Sadeq Alawi, Abdulla Khaled, Asma Lefalher, Ayah Binrajab) | 3:54.77 |
36 | Angola (Henrique Mascarenhas, Salvador Gordo, Maria Lopes Freitas, Lia Ana Lima) | 3:58.84 |
37 | Papua New Guinea (Nathaniel Noka, Josh Tarere, Abigail Ai Tom, Georgia-Leigh Vele) | 4:03.14 |
38 | Micronesia (Taeyanna Adams, Tasi Limtiaco, Kyler Anthony Kihleng, Kestra Kihleng) | 4:03.87 |
39 | Northern Mariana Islands (Isaiah Aleksenko, Anthony Deleon Guerrero, Shoko Litulumar, Maria Corazon Ayson Batallones) | 4:05.62 |
40 | Cape Verde (Jayla Pina, Ailton Lima, La Troya Pina, Troy Pina) | 4:07.35 |
41 | Malawi (Filipe Miguel Escudeiro Gomes, Ammara Pinto, Tayamika Chang'Anamuno, Muhammad Ali Moosa) | 4:14.43 |
42 | Maldives (Hamna Ahmed, Ali Imaan, Mohamed Rihan Shiham, Meral Ayn Latheef) | 4:17.74 |
43 | Palau (Jion Hosei, Travis Dui Sakurai, Galyah Ngerchesiuch Mikel, Yuri Hosei) | 4:17.91 |