400 metres Freestyle, Boys
Participants
| Nr. | Athlete | NOC |
|---|---|---|
| 1 | Pol Arias |  AND |
| 2 | Sebastian Steffan |  AUT |
| 3 | Anthony Selby |  BAR |
| 4 | Luiz Altamir |  BRA |
| 5 | Colin Gilbert |  CAN |
| 6 | Sven Arnar Saemundsson |  CRO |
| 7 | Luis Vega |  CUB |
| 8 | Ahmed Akram |  EGY |
| 9 | Marcelo Acosta |  ESA |
| 10 | Guillermo Sánchez |  ESP |
| 11 | Marc Vivas | ESP |
| 12 | Rahiti De Vos |  FRA |
| 13 | Martyn Walton |  GBR |
| 14 | Ido Haber |  ISR |
| 15 | Marc Hinawi | ISR |
| 16 | Yudai Amada |  JPN |
| 17 | Povilas Strazdas |  LTU |
| 18 | Welson Sim |  MAS |
| 19 | Alexei Sancov |  MDA |
| 20 | Ricardo Vargas |  MEX |
| 21 | Stefan Jankulovski |  MKD |
| 22 | Henrik Christiansen |  NOR |
| 23 | Michael Mincham |  NZL |
| 24 | Wojciech Wojdak |  POL |
| 25 | André Farinha |  POR |
| 26 | Rafael Gil | POR |
| 27 | Brent Szurdoki |  RSA |
| 28 | Grega Popovic |  SLO |
| 29 | Nils Liess |  SUI |
| 30 | Mykhailo Romanchuk |  UKR |
| 31 | Patrick Ransford |  USA |