Pos. | Bateria | Raia | Nadador | Nacionalidade | Tempo | Notas |
1 | 4 | 3 | Romanchuk, MykhailoMykhailo Romanchuk | Ucrânia | 14:44.11 | Q, |
2 | 4 | 4 | Paltrinieri, GregorioGregorio Paltrinieri | Itália | 14:44.31 | Q |
3 | 4 | 5 | Detti, GabrieleGabriele Detti | Itália | 14:50.10 | Q |
4 | 4 | 7 | Micka, JanJan Micka | Chéquia | 14:55.47 | Q |
5 | 3 | 6 | Wojdak, WojciechWojciech Wojdak | Polónia | 14:57.39 | Q |
6 | 4 | 6 | Christiansen, HenrikHenrik Christiansen | Noruega | 14:57.41 | Q |
7 | 3 | 4 | Horton, MackMack Horton | Austrália | 14:59.24 | Q |
8 | 4 | 0 | Frolov, SerhiySerhiy Frolov | Ucrânia | 14:59.32 | Q |
9 | 2 | 4 | Park Tae-hwan | Coreia do Sul | 14:59.44 | |
10 | 3 | 2 | Akram, AhmedAhmed Akram | Egito | 14:59.56 | |
11 | 3 | 5 | McLoughlin, JackJack McLoughlin | Austrália | 15:01.55 | |
12 | 3 | 1 | Auböck, FelixFelix Auböck | Áustria | 15:02.78 | |
13 | 3 | 7 | Druzhinin, IlyaIlya Druzhinin | Rússia | 15:03.05 | |
14 | 2 | 3 | Acosta, MarceloMarcelo Acosta | El Salvador | 15:04.79 | |
15 | 2 | 0 | Johansson, VictorVictor Johansson | Suécia | 15:05.91 | |
16 | 4 | 1 | Sweetser, TrueTrue Sweetser | Estados Unidos | 15:07.38 | |
17 | 4 | 2 | Wellbrock, FlorianFlorian Wellbrock | Alemanha | 15:07.43 | |
18 | 3 | 3 | Jervis, DanielDaniel Jervis | Reino Unido | 15:07.97 | |
19 | 3 | 9 | Costa, GuilhermeGuilherme Costa | Brasil | 15:08.09 | |
20 | 4 | 9 | Ipsen, AntonAnton Ipsen | Dinamarca | 15:10.02 | |
21 | 4 | 8 | Finke, RobertRobert Finke | Estados Unidos | 15:15.15 | |
22 | 3 | 0 | Arroyo, AntonioAntonio Arroyo | Espanha | 15:18.50 | |
23 | 2 | 2 | Szurdoki, BrentBrent Szurdoki | África do Sul | 15:18.84 | |
24 | 2 | 7 | Rasovszky, KristófKristóf Rasovszky | Hungria | 15:23.87 | |
25 | 2 | 5 | Ji Xinjie | China | 15:23.91 | |
26 | 2 | 6 | Kalmár, ÁkosÁkos Kalmár | Hungria | 15:23.96 | |
27 | 2 | 1 | Vargas, RicardoRicardo Vargas | México | 15:24.79 | |
28 | 2 | 8 | Pina, GuilhermeGuilherme Pina | Portugal | 15:26.10 | |
29 | 2 | 9 | Scarlat, BogdanBogdan Scarlat | Roménia | 15:26.18 | |
30 | 1 | 9 | Nguyễn Hữu Kim Sơn | Vietname | 15:29.90 | |
31 | 1 | 3 | Huang Guo-ting | Taipé Chinesa | 15:31.10 | |
32 | 1 | 2 | Prawira, Aflah FadlanAflah Fadlan Prawira | Indonésia | 15:31.27 | |
33 | 1 | 5 | Negris, DimitriosDimitrios Negris | Grécia | 15:35.55 | |
34 | 1 | 1 | Mortensen, ÓliÓli Mortensen | Ilhas Feroé | 15:37.77 | |
35 | 1 | 7 | Bayo, ChristianChristian Bayo | Porto Rico | 15:52.78 | |
36 | 1 | 6 | Roberts, WesleyWesley Roberts | Ilhas Cook | 16:15.04 | |
37 | 1 | 0 | Aleksi, FranciFranci Aleksi | Albânia | 16:42.97 | |
| 1 | 4 | Naidich, MartínMartín Naidich | Argentina | DNS |
1 | 8 | Tapia, FelipeFelipe Tapia | Chile |
3 | 8 | Sun Yang | China |