Rank | Nation | Swimmer | Time |
![1st place, gold medalist(s)](//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Gold_medal_icon.svg/16px-Gold_medal_icon.svg.png) | Germany | Rob Muffels Christian Reichert Isabelle Härle | 55:14.4 |
![2nd place, silver medalist(s)](//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Silver_medal_icon.svg/16px-Silver_medal_icon.svg.png) | Brazil | Allan do Carmo Diogo Villarinho Ana Marcela Cunha | 55:31.2 |
![2nd place, silver medalist(s)](//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Silver_medal_icon.svg/16px-Silver_medal_icon.svg.png) | Netherlands | Marcel Schouten Ferry Weertman Sharon van Rouwendaal | 55:31.2 |
4 | Italy | Federico Vanelli Simone Ercoli Rachele Bruni | 55:49.4 |
5 | United States | Sean Ryan Jordan Wilimovsky Ashley Twichell | 55:50.6 |
6 | Australia | Jarrod Poort Simon Huitenga Melissa Gorman | 56:07.4 |
7 | Hungary | Dániel Székelyi Gergely Gyurta Éva Risztov | 56:08.4 |
8 | Greece | Antonios Fokaidis Spyridon Gianniotis Kalliopi Araouzou | 56:18.6 |
9 | Ecuador | Ivan Enderica Ochoa Esteban Enderica Samantha Arévalo | 56:45.9 |
10 | Russia | Sergey Bolshakov Daniil Serebrennikov Anastasiia Krapivina | 56:47.0 |
11 | France | David Aubry Marc-Antoine Olivier Aurélie Muller | 56:50.9 |
12 | Spain | Héctor Ruiz Antonio Arroyo Erika Villaécija | 57:16.0 |
13 | Argentina | Gabriel Villagoiz Guillermo Bertola Cecilia Biagioli | 57:27.8 |
14 | China | Qiao Zhongyi Zu Lijun Yan Siyu | 57:53.9 |
15 | Portugal | Vasco Gaspar Rafael Gil Angelica María | 58:12.6 |
16 | Venezuela | Wilder Carreño Erwin Maldonado Paola Pérez | 58:39.3 |
17 | Czech Republic | Ján Kútnik Matěj Kozubek Alena Benešová | 59:43.1 |
18 | South Africa | Chad Ho Daniel Marais Michelle Weber | 1:00:31.2 |
19 | Mexico | Daniel Delgadillo Arturo Pérez Vertti Zaira Cardenas | 1:01:36.6 |
20 | Kazakhstan | Kenessary Kenenbayev Vitaliy Khudyakov Xeniya Romanchuk | 1:02:12.7 |
21 | Egypt | Youssef Hossameldeen Adel Ragab Reem Kaseem | 1:02:13.1 |
22 | Hong Kong | Tse Tsz Fung Kwan Ho Yin Kwok Cho Yiu | 1:05:43.8 |