Final
mercredi 8 août 2018, 17h48 GMT – 17h48 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Adam Peaty | Great Britain | 26.09″ |
| 2 | Fabio Scozzoli | Italy | + 0.7″ |
| 3 | Peter John Stevens | Slovenia | + 0.97″ |
| 4 | Kirill Prigoda | Russia | + 1.09″ |
| 5 | Caba Siladji | Serbia | + 1.11″ |
| 6 | Ties Elzerman | Netherlands | + 1.15″ |
| 7 |  Fabian Schwingenschlögl | Germany | + 1.2″ |
| 8 |  Ilya Shymanovich | Belarus | + 1.23″ |