Heat 3
samedi 29 juillet 2017, 10h48 GMT – 10h48 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Wojciech Wojdak | Poland | 14′ 57.39″ |
| 2 |  Mack Horton | Australia | + 1.85″ |
| 3 | Ahmed Akram Abbas | Egypt | + 2.17″ |
| 4 | Jack McLoughlin | Australia | + 4.16″ |
| 5 | Felix Auböck | Austria | + 5.39″ |
| 6 | Ilya Druzhinin | Russia | + 5.66″ |
| 7 | Daniel Jervis | Great Britain | + 10.58″ |
| 8 |  Guilherme Costa | Brazil | + 10.7″ |
| 9 | Antonio Arroyo | Spain | + 21.11″ |
| Yang Sun | China | DNS |