Swimming — 400 metres Freestyle, Boys
| Times held | 3 |
|---|---|
| Total participants | 34 |
| Total countries | 28 |
Participants
| Year | Event | Status | Participants | NOCs |
|---|---|---|---|---|
| 2010 | 400 metres Freestyle, Boys | YOG | 28 | 26 |
| 2014 | 400 metres Freestyle, Boys | YOG | 31 | 28 |
| 2018 | 400 metres Freestyle, Boys | YOG | 32 | 28 |
Medal winners
Medals by country
| NOC | Gold | Silver | Bronze | Total | |
|---|---|---|---|---|---|
| Hungary |  HUN |
1 | 0 | 0 | 1 |
| People's Republic of China |  CHN |
1 | 0 | 0 | 1 |
| Ukraine |  UKR |
1 | 0 | 0 | 1 |
| El Salvador |  ESA |
0 | 1 | 0 | 1 |
| Italy |  ITA |
0 | 1 | 0 | 1 |
| South Africa |  RSA |
0 | 1 | 0 | 1 |
| Japan |  JPN |
0 | 0 | 1 | 1 |
| Norway |  NOR |
0 | 0 | 1 | 1 |
| Venezuela |  VEN |
0 | 0 | 1 | 1 |
Top medallists
| Athlete | Nat | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| Dai Jun | CHN |
1 | 0 | 0 | 1 |
| Mykhailo Romanchuk | UKR |
1 | 0 | 0 | 1 |
| Kristóf Milák | HUN |
1 | 0 | 0 | 1 |
| Chad le Clos | RSA |
0 | 1 | 0 | 1 |
| Marcelo Acosta | ESA |
0 | 1 | 0 | 1 |
| Marco De Tullio | ITA |
0 | 1 | 0 | 1 |