| Event: | Boys' 400 metres |
| Games: | 2018 Summer Youth |
| Venue: | Parque Polideportivo Roca |
| Date: | 11 October and 14 October 2018 |
| Competitors: | 25 |
| Nations: | 25 |
| Longnames: | true |
| Gold: | Luis Antonio Avilés Ferreiro |
| Goldnoc: | MEX |
| Silver: | Kennedy Luchembe |
| Silvernoc: | ZAM |
| Bronze: | Nicholas Ramey |
| Bronzenoc: | USA |
| Prev: | 2014 |
| Next: | 2026 |
The boys' 400 metres competition at the 2018 Summer Youth Olympics was held on 11 and 14 October, at the Parque Polideportivo Roca.
All times are in local time (UTC-3).
| Date | Time | Round | ||||
|---|---|---|---|---|---|---|
| Thursday, 11 October 2018 | 17:20 | Stage 1 | ||||
| style=background:lemonchiffon | Sunday, 14 October 2018 | style=background:lemonchiffon | 16:10 | style=background:lemonchiffon | Stage 2 |
| Rank | Heat | Lane | Athlete | Nation | Result | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 2 | Luis Antonio Avilés Ferreiro | 47.45 | QH4 | ||
| 2 | 4 | 2 | Nicholas Ramey | 47.60 | QH4 | ||
| 3 | 4 | 8 | Ilyas Çanakçi | 47.96 | QH4 | ||
| 4 | 1 | 7 | Kennedy Luchembe | 47.98 | QH4 | ||
| 5 | 4 | 7 | Dilan Bogoda | 48.52 | QH4, | ||
| 6 | 3 | 7 | Lorenzo Benati | 48.58 | QH4 | ||
| 7 | 1 | 4 | Yefim Tarassov | 48.93 | QH4, | ||
| 8 | 1 | 2 | Solomon Diafo | 49.08 | QH4 | ||
| 9 | 3 | 4 | Bernat Erta | 49.18 | QH3 | ||
| 10 | 2 | 7 | Keegan Bell | 49.58 | QH3 | ||
| 11 | 1 | 3 | Junior Rouse | 50.33 | QH3 | ||
| 12 | 2 | 5 | Douglas Hernandes Mendes da Silva | 50.39 | QH3 | ||
| 13 | 3 | 5 | Gnanzou Desire Kodjo | 50.47 | QH3 | ||
| 14 | 1 | 6 | Wang Yu-hsuan | 50.82 | QH3 | ||
| 15 | 3 | 2 | Raymond Oriakhi | 51.01 | QH2 | ||
| 16 | 4 | 4 | Evaldo Whitehorne | 51.55 | QH2 | ||
| 17 | 3 | 3 | Potchara Petchkaew | 51.81 | QH2 | ||
| 18 | 3 | 6 | Bernard Olesitse | 52.04 | QH2 | ||
| 19 | 4 | 5 | Dalitso Gunde | 53.88 | QH2 | ||
| 20 | 2 | 8 | Christel Rakotomalala | 54.31 | QH2 | ||
| 21 | 1 | 5 | Ludovic Ouceni | 58.15 | QH1 | ||
| 4 | 6 | Clevonte Lodge-Bean | QH1 | ||||
| 2 | 6 | Malik John | QH1 | ||||
| 2 | 4 | Jared Sylvester | QH1 | ||||
| 4 | 3 | Yusuf Anan | QH1 | ||||
| 2 | 3 | Berat Mustafa | QH1 |
| Rank | Heat | Lane | Athlete | Nation | Result | Notes | ||
|---|---|---|---|---|---|---|---|---|
| 1 | 4 | 3 | Kennedy Luchembe | 46.36 | ||||
| 2 | 4 | 6 | Luis Antonio Avilés Ferreiro | 46.78 | ||||
| 3 | 4 | 4 | Nicholas Ramey | 47.27 | ||||
| 4 | 4 | 5 | Ilyas Çanakçi | 47.82 | ||||
| 5 | 4 | 7 | Lorenzo Benati | 48.00 | ||||
| 6 | 3 | 4 | Bernat Erta | 48.13 | ||||
| 7 | 4 | 2 | Solomon Diafo | 48.47 | ||||
| 8 | 3 | 6 | Douglas Hernandes Mendes da Silva | 48.65 | ||||
| 9 | 4 | 8 | Dilan Bogoda | 48.81 | ||||
| 10 | 2 | 4 | Bernard Olesitse | 49.04 | ||||
| 11 | 3 | 5 | Keegan Bell | 49.05 | ||||
| 12 | 4 | 1 | Yefim Tarassov | 49.88 | ||||
| 13 | 2 | 3 | Raymond Oriakhi | 50.01 | ||||
| 14 | 3 | 3 | Junior Rouse | 50.37 | ||||
| 15 | 3 | 7 | Wang Yu-hsuan | 50.54 | ||||
| 16 | 2 | 6 | Evaldo Whitehorne | 50.93 | ||||
| 17 | 3 | 8 | Gnanzou Desire Kodjo | 51.11 | ||||
| 18 | 2 | 5 | Potchara Petchkaew | 51.19 | ||||
| 19 | 1 | 7 | Yusuf Anan | 52.37 | ||||
| 20 | 2 | 7 | Christel Rakotomalala | 52.88 | ||||
| 1 | 4 | Malik John | ||||||
| 1 | 5 | Jared Sylvester | ||||||
| 2 | 8 | Dalitso Gunde | ||||||
| 1 | 6 | Ludovic Ouceni | ||||||
| 1 | 3 | Clevonte Lodge-Bean | ||||||
| 1 | 8 | Berat Mustafa |
| Rank | Athlete | Nation | Stage 1 | Stage 2 | Total | |
|---|---|---|---|---|---|---|
| Luis Antonio Avilés Ferreiro | 47.45 | 46.78 | 1:34.23 | |||
| Kennedy Luchembe | 47.98 | 46.36 | 1:34.34 | |||
| Nicholas Ramey | 47.60 | 47.27 | 1:34.87 | |||
| Ilyas Çanakçi | 47.96 | 47.82 | 1:35.78 | |||
| Lorenzo Benati | 48.58 | 48.00 | 1:36.58 | |||
| Bernat Erta | 49.18 | 48.13 | 1:37.31 | |||
| Dilan Bogoda | 48.52 | 48.81 | 1:37.33 | |||
| Solomon Diafo | 49.08 | 48.47 | 1:37.55 | |||
| Keegan Bell | 49.58 | 49.05 | 1:38.63 | |||
| 10 | Yefim Tarassov | 48.93 | 49.88 | 1:38.81 | ||
| 11 | Douglas Hernandes Mendes da Silva | 50.39 | 48.65 | 1:39.04 | ||
| 12 | Junior Rouse | 50.33 | 50.37 | 1:40.70 | ||
| 13 | Raymond Oriakhi | 51.01 | 50.01 | 1:41.02 | ||
| 14 | Bernard Olesitse | 52.04 | 49.04 | 1:41.08 | ||
| 15 | Wang Yu-hsuan | 50.82 | 50.54 | 1:41.36 | ||
| 16 | Gnanzou Desire Kodjo | 50.47 | 51.11 | 1:41.58 | ||
| 17 | Evaldo Whitehorne | 51.55 | 50.93 | 1:42.48 | ||
| 18 | Potchara Petchkaew | 51.81 | 51.19 | 1:43.00 | ||
| 19 | Christel Rakotomalala | 54.31 | 52.88 | 1:47.19 | ||
| Yusuf Anan | 52.37 | |||||
| Dalitso Gunde | 53.88 | |||||
| Ludovic Ouceni | 58.15 | |||||
| Malik John | ||||||
| Jared Sylvester | ||||||
| Clevonte Lodge-Bean | ||||||
| Berat Mustafa |