Heat 1
mercredi 19 mai 2021, 09h26 GMT – 09h26 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  James Guy | Great Britain | 7′ 8.58″ |
| 1 | Max Litchfield | Great Britain | + 0″ |
| 1 | Calum Jarvis | Great Britain | + 0″ |
| 1 | Matthew Richards | Great Britain | + 0″ |
| 2 |  Filippo Megli | Italy | + 1.68″ |
| 2 | Matteo Ciampi | Italy | + 1.68″ |
| 2 | Marco De Tullio | Italy | + 1.68″ |
| 2 | Manuel Frigo | Italy | + 1.68″ |
| 3 |  Nils Liess | Switzerland | + 2.57″ |
| 3 | Antonio Djakovic | Switzerland | + 2.57″ |
| 3 | Noè Ponti | Switzerland | + 2.57″ |
| 3 | Roman Mityukov | Switzerland | + 2.57″ |
| 4 | Jordan Sloan | Ireland | + 4.15″ |
| 4 | Jack McMillan | Ireland | + 4.15″ |
| 4 | Finn McGeever | Ireland | + 4.15″ |
| 4 | Gerry Quinn | Ireland | + 4.15″ |
| 5 |  Andrej Barna | Serbia | + 9.32″ |
| 5 | Velimir Stjepanovic | Serbia | + 9.32″ |
| 5 | Vuk Celic | Serbia | + 9.32″ |
| 5 | Aleksa Bobar | Serbia | + 9.32″ |
| 6 | Dimitrios Negris | Greece | + 9.52″ |
| 6 |  Apostolos Papastamos | Greece | + 9.52″ |
| 6 | Dimitrios Markos | Greece | + 9.52″ |
| 6 | Konstantinos Englezakis | Greece | + 9.52″ |
| 7 | Doga Çelik | Turkey | + 18.94″ |
| 7 | Efe Turan | Turkey | + 18.94″ |
| 7 | Yigit Aslan | Turkey | + 18.94″ |
| 7 | Meliksah Dügen | Turkey | + 18.94″ |