| Final Saturday 13.08 | time | gap | L | React. |  400m |  800m |  1200m |  | 1. Gregorio Paltrinieri |  ITA | 14:34.57 |   | 4 | 0.75 | 3:50.70 1. | 7:44.97 1. | 11:30.07 1. |  | 2. Connor Jaeger |  USA | 14:39.48 | 4.91 | 5 | 0.75 | 3:53.15 3. | 7:49.73 2. | 11:44.78 2. |  | 3. Gabriele Detti |  ITA | 14:40.86 | 6.29 | 2 | 0.77 | 3:53.74 5. | 7:51.06 6. | 11:47.79 4. |  | 4. Jordan Wilimovsky |  USA | 14:45.03 | 10.46 | 3 | 0.66 | 3:53.41 4. | 7:49.98 3. | 11:46.50 3. |  | 5. Mack Horton |  AUS | 14:49.54 | 14.97 | 6 | 0.72 | 3:53.01 2. | 7:50.50 4. | 11:49.49 5. |  | 6. Ryan Cochrane |  CAN | 14:49.61 | 15.04 | 1 | 0.74 | 3:53.74 5. | 7:50.76 5. | 11:49.75 6.  |  | 7. Damien Joly |  FRA | 14:52.73 | 18.16 | 7 | 0.70 | 3:55.13 7. | 7:55.11 7. | 11:54.79 7.  |  | 8. Henrik Christiansen |  NOR | 15:02.66 | 28.09 | 8 | 0.84 | 3:57.19 8. | 7:56.17 8. | 11:59.43 8.  |   
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 |   |  | 12.08 Friday Afternoon - First 8 to Final. |   
| Ranking | time | gap | React. |   | HR | Heat |  | 1. Gregorio Paltrinieri |  ITA | 14:44.51 |   | 0.80 |   | 1. | 6 |  | 2. Connor Jaeger |  USA | 14:45.74 | 1.23 | 0.72 |   | 2. | 6 |  | 3. Jordan Wilimovsky |  USA | 14:48.23 | 3.72 | 0.75 |   | 1. | 5 |  | 4. Mack Horton |  AUS | 14:48.47 | 3.96 | 0.74 |   | 2. | 5 |  | 5. Gabriele Detti |  ITA | 14:48.68 | 4.17 | 0.80 |   | 3. | 5 |  | 6. Damien Joly |  FRA | 14:48.90 | 4.39 | 0.72 |   | 4. | 5 |  | 7. Ryan Cochrane |  CAN | 14:53.44 | 8.93 | 0.75 |   | 5. | 5 |  | 8. Henrik Christiansen |  NOR | 14:55.40 | 10.89 | 0.80 |   | 6. | 5 |  |  eliminated |  | 9. Jack Mcloughlin |  AUS | 14:56.02 | 11.51 | 0.76 |   | 3. | 6 |  | 10.Stephen Milne |  GBR | 14:57.23 | 12.72 | 0.77 |   | 4. | 6 |  | 11.Ahmed Akaram Mohamed Akaram |  EGY | 14:58.37 | 13.86 | 0.74 |   | 5. | 6 |  | 12.Jan Micka |  CZE | 14:58.69 | 14.18 | 0.72 |   | 1. | 4 |  | 13.Ilya Druzhinin |  RUS | 14:59.56 | 15.05 | 0.77 |   | 1. | 2 |  | 14.Iaroslav Potapov |  RUS | 15:00.99 | 16.48 | 0.75 |   | 2. | 4 |  | 15.Mykhailo Romanchuk |  UKR | 15:01.35 | 16.84 | 0.74 |   | 6. | 6 |  | 16.Yang Sun |  CHN | 15:01.97 | 17.46 | 0.76 |   | 7. | 5 |  | 17.Sergii Frolov |  UKR | 15:04.61 | 20.10 | 0.75 |   | 3. | 4 |  | 18.Anton Ipsen |  DEN | 15:05.91 | 21.40 | 0.75 |   | 1. | 3 |  | 19.Gergely Gyurta |  HUN | 15:06.24 | 21.73 | 0.72 |   | 7. | 6 |  | 20.Ziao Qiu |  CHN | 15:06.71 | 22.20 | 0.74 |   | 4. | 4 |  | 21.Oussama Mellouli |  TUN | 15:07.78 | 23.27 | 0.88 |   | 1. | 1 |  | 22.Marcelo Acosta |  ESA | 15:08.17 | 23.66 | 0.68 |   | 2. | 2 |  | 23.Esteban Enderica Salgado |  ECU | 15:10.15 | 25.64 | 0.68 |   | 2. | 3 |  | 24.Marc Sanchez |  ESP | 15:11.38 | 26.87 | 0.67 |   | 3. | 3 |  | 25.Ricardo Vargas |  MEX | 15:11.53 | 27.02 | 0.74 |   | 3. | 2 |  | 26.Antonio Arroyo |  ESP | 15:12.61 | 28.10 | 0.71 |   | 4. | 3 |  | 27.Tim Shuttleworth |  GBR | 15:13.01 | 28.50 | 0.77 |   | 8. | 5 |  | 28.Wojciech Wojdak |  POL | 15:13.18 | 28.67 | 0.74 |   | 5. | 4 |  | 29.Brandonn Almeida |  BRA | 15:14.73 | 30.22 | 0.67 |   | 4. | 2 |  | 30.Pal Joensen |  FAR | 15:18.49 | 33.98 | 0.72 |   | 6. | 4 |  | 31.Miguel Leite Valente |  BRA | 15:22.57 | 38.06 | 0.66 |   | 5. | 2 |  | 32.Florian Wellbrock |  GER | 15:23.88 | 39.37 | 0.70 |   | 8. | 6 |  | 33.Mateusz Sawrymowicz |  POL | 15:26.33 | 41.82 | 0.79 |   | 5. | 3 |  | 34.Richard Nagy |  SVK | 15:26.48 | 41.97 | 0.72 |   | 7. | 4 |  | 35.Kristof Rasovszky |  HUN | 15:29.36 | 44.85 | 0.79 |   | 6. | 2 |  | 36.Martin Bau |  SLO | 15:29.95 | 45.44 | 0.69 |   | 7. |  | 37.Mihajlo Ceprkalo |  BIH | 15:31.62 | 47.11 | 0.75 |   | 2. | 1 |  | 38.Matt Hutchins |  NZL | 15:32.60 | 48.09 | 0.72 |   | 3. | 1 |  | 39.Welson Sim |  MAS | 15:32.63 | 48.12 | 0.73 |   | 4. | 1 |  | 40.Nicolas D'Oriano |  FRA | 15:33.62 | 49.11 | 0.75 |   | 6. | 3 |  | 41.Matthew Meyer |  RSA | 15:36.22 | 51.71 | 0.85 |   | 7. | 3 |  | 42.Felix Aubock |  AUT | 15:36.24 | 51.73 | 0.80 |   | 8. | 4 |  | 43.Martin Naidich |  ARG | 15:39.93 | 55.42 | 0.72 |   | 8. | 2 |  | 44.Wesley Roberts |  COK | 15:44.32 | 59.81 | 0.76 |   | 5. | 1 |  | 45.Felipe Tapia Salinas |  CHI | 16:02.44 | 01:17.93 | 0.76 |   | 6. | 1 |  | -. Tae-Hwan Park |  KOR | DNS |   |   |   | - | 3 |   
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| Olympic Qualifyng Time (OQT) 15:14.77 - NOC can enter up to 2 swimmers with OQT. |  | Olympic Selection Time (OST) 15:46.79, invitantional - A swwimer meeting the "invitation" standard was eligible for entry. But this entry was allotted/filled by ranking.  |   
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|  Olympic Qualifyng Time by NOC - 40 Swimmers - addtional 6 Swimmers. |  |  2 Quotas - 13 NOC |  | 2 |  Australia | Mack Horton | Jack McLoughlin |  | 2 |  Brazil | Brandonn Almeida | Miguel Valente |  | 2 |  China | Qiu Ziao | Sun Yang |  | 2 |  Denmark | Anton Ipsen | Joensen Pál |  | 2 |  France | Nicolas D'Oriano | Damien Joly |  | 2 |  Great_Britain | Stephen Milne | Timothy Shuttleworth |  | 2 |  Hungary | Gergely Gyurta | Kristóf Rasovszky |  | 2 |  Italy | Gabriele Detti | Gregorio Paltrinieri |  | 2 |  Poland | Mateusz Sawrymowicz | Wojciech Wojdak |  | 2 |  Russia | Ilya Druzhinin | Yaroslav Potapov |  | 2 |  Spain | Antonio Arroyo | Marc Sánchez |  | 2 |  Ukraine | Serhiy Frolov | Mykhailo Romanchuk |  | 2 |  United_States | Connor Jaeger | Jordan Wilimovsky |  |  1 Quota 14 NOC |  | 1 |  Argentina | Martín Naidich | Martín Carrizo |  | 1 |  Austria | Felix Auböck |  | 1 |  Canada | Ryan Cochrane |  | 1 |  Czechia | Jan Micka |  | 1 |  Ecuador | Esteban Enderica |  | 1 |  Egypt | Ahmed Akram |  | 1 |  El Salvador | Marcelo Acosta |  | 1 |  Germany | Florian Wellbrock |  | 1 |  Mexico | Ricardo Vargas |  | 1 |  Norway | Henrik Christiansen |  | 1 |  Slovakia | Richárd Nagy |  | 1 |  South_Africa | Matthew Meyer |  | 1 |  South_Korea | Park Tae-hwan |  | 1 |  Tunisia | Oussama Mellouli |  |  Olympic Selection Time – 15:46.79 - 6 NOC |  | 1 |  Bosnia Herzegovina | Mihajlo Čeprkalo | [b] |  | 1 |  Chile | Felipe Tapia | [b] |  | 1 |  Cook Islands | Wesley Roberts | [b] |  | 1 |  Malaysia | Welson Sim | [a] |  | 1 |  New_Zealand | Matthew Hutchins | [a] |  | 1 |  Slovenia | Martin Bau |  |  Universalitiy Places - 0 NOC |  | 46 | Total | 41 |   
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