Heats
mardi 7 août 2018, 10h14 GMT – 10h14 GMT
| Nom | Équipe | Temps | |
|---|---|---|---|
| 1 |  Adam Peaty | Great Britain | 26.5″ |
| 2 | Fabio Scozzoli | Italy | + 0.54″ |
| 3 |  Ilya Shymanovich | Belarus | + 0.59″ |
| 4 | Caba Siladji | Serbia | + 0.62″ |
| 5 | Ties Elzerman | Netherlands | + 0.66″ |
| 6 | Alessandro Pinzuti | Italy | + 0.67″ |
| 7 | Kirill Prigoda | Russia | + 0.71″ |
| 7 | Peter John Stevens | Slovenia | + 0.71″ |
| 9 | Ross Murdoch | Great Britain | + 0.77″ |
| 9 | Johannes Skagius | Sweden | + 0.77″ |
| 11 | James Wilby | Great Britain | + 0.94″ |
| 12 |  Fabian Schwingenschlögl | Germany | + 0.99″ |
| 13 | Nikola Obrovac | Croatia | + 1.12″ |
| 14 | Bernhard Reitshammer | Austria | + 1.16″ |
| 14 |  Darragh Greene | Ireland | + 1.16″ |
| 16 |  Arno Kamminga | Netherlands | + 1.21″ |
| 17 | Ioannis Karpouzlis | Greece | + 1.24″ |
| 18 | Emre Sakçi | Turkey | + 1.26″ |
| 19 |  Giedrius Titenis | Lithuania | + 1.28″ |
| 20 | Ilya Khomenko | Russia | + 1.29″ |
| 21 |  Tobias Bjerg | Denmark | + 1.34″ |
| 22 | Andrius Šidlauskas | Lithuania | + 1.35″ |
| 23 | Marek Botik | Slovakia | + 1.39″ |
| 23 | Oleg Kostin | Russia | + 1.39″ |
| 25 | Luca Pizzini | Italy | + 1.43″ |
| 26 | Tomáš Klobucník | Slovakia | + 1.53″ |
| 27 | Christopher Rothbauer | Austria | + 1.59″ |
| 27 | Alex Murphy | Ireland | + 1.59″ |
| 29 | Yannick Käser | Switzerland | + 1.78″ |
| 30 | William Wihanto | Finland | + 1.8″ |
| 31 | Valentin Bayer | Austria | + 1.83″ |
| 32 | Lachezar Shumkov | Bulgaria | + 1.9″ |
| 33 | Bartlomiej Roguski | Poland | + 1.93″ |
| 34 | Itay Goldfaden | Israel | + 1.97″ |
| 35 | Mikhail Dorinov | Russia | + 2.01″ |
| 36 | Ivan Strilets | Ukraine | + 2.04″ |
| 36 | Martin Allikvee | Estonia | + 2.04″ |
| 38 | Mykyta Koptyelov | Ukraine | + 2.15″ |
| 39 | Demir Atasoy | Turkey | + 2.19″ |
| 40 |  Ari-Pekka Liukkonen | Finland | + 2.21″ |
| 41 | Filipp Provorkov | Estonia | + 2.27″ |
| 42 |  Berkay Ögretir | Turkey | + 2.4″ |
| 43 | Teemu Vuorela | Finland | + 2.43″ |
| 44 | Jozef Beno | Slovakia | + 2.45″ |
| 45 | Daniils Bobrovs | Latvia | + 2.49″ |
| 46 | Dávid Horváth | Hungary | + 2.53″ |
| 47 | Andri Aedma | Estonia | + 2.84″ |
| 48 | Johannes Dietrich | Austria | + 2.99″ |
| 49 | Lyubomir Epitropov | Bulgaria | + 3.13″ |
| 50 | Oktaycan Emirbayer | Turkey | + 3.22″ |
| 51 | Oleksandr Karpenko | Ukraine | + 3.29″ |
| 52 | Michael Stafrace | Malta | + 3.53″ |
| 53 | Deni Baholli | Albania | + 4.93″ |
| Jacques Läuffer | Switzerland | DNS | |
| Marcin Stolarski | Poland | DNS |