Heat 3
jeudi 20 mai 2021, 09h09 GMT – 09h09 GMT
| Nom | Équipe | ||
|---|---|---|---|
| 1 |  Adam Peaty | Great Britain | |
| 1 | Anna Hopkin | Great Britain | |
| 1 | Joe Litchfield | Great Britain | |
| 1 | Harriet Jones | Great Britain | |
| 2 | Grigory Tarasevich | Russia | |
| 2 | Svetlana Chimrova | Russia | |
| 2 | Arina Surkova | Russia | |
| 2 | Danil Semyaninov | Russia | |
| 3 |  Théo Bussière | France | |
| 3 |  Marie Wattel | France | |
| 3 | Yohann Ndoye Brouard | France | |
| 3 | Assia Touati | France | |
| 4 | Alicja Tchórz | Poland | |
| 4 |  Jakub Majerski | Poland | |
| 4 | Kornelia Fiedkiewicz | Poland | |
| 4 | Jan Kozakiewicz | Poland | |
| 5 |  Emilie Beckmann | Denmark | |
| 5 | Mathias Rysgaard | Denmark | |
| 5 | Tobias Bjerg | Denmark | |
| 5 | Karoline Sørensen | Denmark | |
| 6 | Gabriela Georgieva | Bulgaria | |
| 6 | Diana Petkova | Bulgaria | |
| 6 | Lyubomir Epitropov | Bulgaria | |
| 6 | Josif Miladinov | Bulgaria | |
| 7 |  Richárd Bohus | Hungary | |
| 7 | Anna Sztankovics | Hungary | |
| 7 | Péter Holoda | Hungary | |
| 7 | Dóra Hatházi | Hungary | |
| 8 |  Tomer Frankel | Israel | |
| 8 | Lea Polonsky | Israel | |
| 8 | Michael Laitarovsky | Israel | |
| 8 | Daria Golovaty | Israel | |
| 9 |  Simonas Bilis | Lithuania | |
| 9 | Deividas Margevicius | Lithuania | |
| 9 | Ugne Mažutaityte | Lithuania | |
| 9 | Kotryna Teterevkova | Lithuania | |
| 10 | Girts Feldbergs | Latvia | |
| 10 | Daniils Bobrovs | Latvia | |
| 10 | Gabriela Nikitina | Latvia | |
| 10 | Arina Baikova | Latvia |