# Athletics at the 2018 Summer Youth Olympics – Boys' 400 metres

The boys' 400 metres competition at the 2018 Summer Youth Olympics was held on 11 and 14 October, at the Parque Polideportivo Roca.

## Schedule

All times are in local time (UTC-3).
| Date | Time | Round |
| Thursday, 11 October 2018 | 17:20 | Stage 1 |
| Sunday, 14 October 2018 | 16:10 | Stage 2 |

## Results
### Stage 1

| Rank | Heat | Lane | Athlete | Nation | Result | Notes |
| 1 | 2 | 2 | Luis Avilés | Mexico | 47.45 | QH4 |
| 2 | 4 | 2 | Nicholas Ramey | United States | 47.60 | QH4 |
| 3 | 4 | 8 | Ilyas Çanakçi | Turkey | 47.96 | QH4 |
| 4 | 1 | 7 | Kennedy Luchembe | Zambia | 47.98 | QH4 |
| 5 | 4 | 7 | Dilan Bogoda | Sri Lanka | 48.52 | QH4, PB |
| 6 | 3 | 7 | Lorenzo Benati | Italy | 48.58 | QH4 |
| 7 | 1 | 4 | Yefim Tarassov | Kazakhstan | 48.93 | QH4, PB |
| 8 | 1 | 2 | Solomon Diafo | Ghana | 49.08 | QH4 |
| 9 | 3 | 4 | Bernat Erta | Spain | 49.18 | QH3 |
| 10 | 2 | 7 | Keegan Bell | Australia | 49.58 | QH3 |
| 11 | 1 | 3 | Junior Rouse | Saint Kitts and Nevis | 50.33 | QH3 |
| 12 | 2 | 5 | Douglas Hernandes Mendes da Silva | Brazil | 50.39 | QH3 |
| 13 | 3 | 5 | Gnanzou Desire Kodjo | Ivory Coast | 50.47 | QH3 |
| 14 | 1 | 6 | Wang Yu-hsuan | Chinese Taipei | 50.82 | QH3 |
| 15 | 3 | 2 | Raymond Oriakhi | Bahamas | 51.01 | QH2 |
| 16 | 4 | 4 | Evaldo Whitehorne | Jamaica | 51.55 | QH2 |
| 17 | 3 | 3 | Potchara Petchkaew | Thailand | 51.81 | QH2 |
| 18 | 3 | 6 | Bernard Olesitse | Botswana | 52.04 | QH2 |
| 19 | 4 | 5 | Dalitso Gunde | Malawi | 53.88 | QH2 |
| 20 | 2 | 8 | Christel Rakotomalala | Madagascar | 54.31 | QH2 |
| 21 | 1 | 5 | Ludovic Ouceni | France | 58.15 | QH1 |
| | 4 | 6 | Clevonte Lodge-Bean | Bermuda | DNF | QH1 |
| | 2 | 6 | Malik John | British Virgin Islands | DQ | R 163.3a QH1 |
| | 2 | 4 | Jared Sylvester | Grenada | DQ | R 163.3a QH1 |
| | 4 | 3 | Yusuf Anan | Bahrain | DQ | R 163.3a QH1 |
| | 2 | 3 | Berat Mustafa | Macedonia | DNS | QH1 |

### Stage 2

| Rank | Heat | Lane | Athlete | Nation | Result | Notes |
| 1 | 4 | 3 | Kennedy Luchembe | Zambia | 46.36 | |
| 2 | 4 | 6 | Luis Avilés | Mexico | 46.78 | |
| 3 | 4 | 4 | Nicholas Ramey | United States | 47.27 | |
| 4 | 4 | 5 | Ilyas Çanakçi | Turkey | 47.82 | |
| 5 | 4 | 7 | Lorenzo Benati | Italy | 48.00 | |
| 6 | 3 | 4 | Bernat Erta | Spain | 48.13 | |
| 7 | 4 | 2 | Solomon Diafo | Ghana | 48.47 | |
| 8 | 3 | 6 | Douglas Hernandes Mendes da Silva | Brazil | 48.65 | |
| 9 | 4 | 8 | Dilan Bogoda | Sri Lanka | 48.81 | |
| 10 | 2 | 4 | Bernard Olesitse | Botswana | 49.04 | |
| 11 | 3 | 5 | Keegan Bell | Australia | 49.05 | |
| 12 | 4 | 1 | Yefim Tarassov | Kazakhstan | 49.88 | |
| 13 | 2 | 3 | Raymond Oriakhi | Bahamas | 50.01 | |
| 14 | 3 | 3 | Junior Rouse | Saint Kitts and Nevis | 50.37 | |
| 15 | 3 | 7 | Wang Yu-hsuan | Chinese Taipei | 50.54 | |
| 16 | 2 | 6 | Evaldo Whitehorne | Jamaica | 50.93 | |
| 17 | 3 | 8 | Gnanzou Desire Kodjo | Ivory Coast | 51.11 | |
| 18 | 2 | 5 | Potchara Petchkaew | Thailand | 51.19 | |
| 19 | 1 | 7 | Yusuf Anan | Bahrain | 52.37 | PB |
| 20 | 2 | 7 | Christel Rakotomalala | Madagascar | 52.88 | |
| | 1 | 4 | Malik John | British Virgin Islands | DQ | R 163.3a |
| | 1 | 5 | Jared Sylvester | Grenada | DQ | R 163.3a |
| | 2 | 8 | Dalitso Gunde | Malawi | DQ | R 163.3a |
| | 1 | 6 | Ludovic Ouceni | France | DNS | |
| | 1 | 3 | Clevonte Lodge-Bean | Bermuda | DNS | |
| | 1 | 8 | Berat Mustafa | Macedonia | DNS | |

### Final placing

| Rank | Athlete | Nation | Stage 1 | Stage 2 | Total |
| | Luis Avilés | Mexico | 47.45 | 46.78 | 1:34.23 |
| | Kennedy Luchembe | Zambia | 47.98 | 46.36 | 1:34.34 |
| | Nicholas Ramey | United States | 47.60 | 47.27 | 1:34.87 |
| 4 | Ilyas Çanakçi | Turkey | 47.96 | 47.82 | 1:35.78 |
| 5 | Lorenzo Benati | Italy | 48.58 | 48.00 | 1:36.58 |
| 6 | Bernat Erta | Spain | 49.18 | 48.13 | 1:37.31 |
| 7 | Dilan Bogoda | Sri Lanka | 48.52 | 48.81 | 1:37.33 |
| 8 | Solomon Diafo | Ghana | 49.08 | 48.47 | 1:37.55 |
| 9 | Keegan Bell | Australia | 49.58 | 49.05 | 1:38.63 |
| 10 | Yefim Tarassov | Kazakhstan | 48.93 | 49.88 | 1:38.81 |
| 11 | Douglas Hernandes Mendes da Silva | Brazil | 50.39 | 48.65 | 1:39.04 |
| 12 | Junior Rouse | Saint Kitts and Nevis | 50.33 | 50.37 | 1:40.70 |
| 13 | Raymond Oriakhi | Bahamas | 51.01 | 50.01 | 1:41.02 |
| 14 | Bernard Olesitse | Botswana | 52.04 | 49.04 | 1:41.08 |
| 15 | Wang Yu-hsuan | Chinese Taipei | 50.82 | 50.54 | 1:41.36 |
| 16 | Gnanzou Desire Kodjo | Ivory Coast | 50.47 | 51.11 | 1:41.58 |
| 17 | Evaldo Whitehorne | Jamaica | 51.55 | 50.93 | 1:42.48 |
| 18 | Potchara Petchkaew | Thailand | 51.81 | 51.19 | 1:43.00 |
| 19 | Christel Rakotomalala | Madagascar | 54.31 | 52.88 | 1:47.19 |
| | Yusuf Anan | Bahrain | DQ | 52.37 | |
| | Dalitso Gunde | Malawi | 53.88 | DQ | |
| | Ludovic Ouceni | France | 58.15 | DNS | |
| | Malik John | British Virgin Islands | DQ | DQ | |
| | Jared Sylvester | Grenada | DQ | DQ | |
| | Clevonte Lodge-Bean | Bermuda | DNF | DNS | |
| | Berat Mustafa | Macedonia | DNS | DNS | |