The men's 400 metres hurdles event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 21, 22 and 23 July. [1] [2]
| Gold | Jehue Gordon |
| Silver | Takatoshi Abe |
| Bronze | Leslie Murray |
23 July
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| Jehue Gordon | 49.30 | |||
| Takatoshi Abe | 49.46 | |||
| Leslie Murray | 50.22 | |||
| 4 | Varg Königsmark | 50.47 | ||
| 5 | Jack Green | 50.49 | ||
| 6 | Stef Vanhaeren | 50.99 | ||
| 7 | Emir Bekrić | 51.06 | ||
| 8 | Boniface Mucheru Tumuti | 52.16 |
22 July
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Stef Vanhaeren | 50.91 | Q | |
| 2 | Leslie Murray | 51.25 | Q | |
| 3 | Hederson Estefani | 51.59 | ||
| 4 | Tobias Giehl | 51.77 | ||
| 5 | Zied Azizi | 51.84 | ||
| 6 | Juan Stenner | 52.61 | ||
| 7 | Chen Chieh | 52.98 | ||
| 8 | Amadou Ndiaye | 54.40 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Takatoshi Abe | 50.45 | Q | |
| 2 | Varg Königsmark | 50.87 | Q | |
| 3 | Emir Bekrić | 50.91 | q | |
| 4 | João de Oliveira | 52.53 | ||
| 5 | Francesco Patano | 52.61 | ||
| 6 | Michael Cochrane | 52.71 | ||
| 7 | Sheroid Evans | 53.03 | ||
| 8 | Jeremiah Mutai | 55.02 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Jehue Gordon | 50.54 | Q | |
| 2 | Jack Green | 51.14 | Q | |
| 3 | Boniface Mucheru Tumuti | 51.22 | q | |
| 4 | José Bencosme De Leon | 52.15 | ||
| 5 | Xavier Carrión | 52.33 | ||
| 6 | Patrick Maher | 52.46 | ||
| 7 | Øyvind Kjerpeset | 53.33 | ||
| 8 | Jonathan Puemi | 53.95 |
21 July
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Emir Bekrić | 51.68 | Q | |
| 2 | Jack Green | 52.16 | Q | |
| 3 | Jeremiah Mutai | 52.53 | Q | |
| 4 | Le Roux Hamman | 52.66 | ||
| 5 | Mohamed Yousef Karam | 54.63 | ||
| 6 | Javarn Gallimore | 55.99 | ||
| 7 | Tim Crowe | 56.27 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Stef Vanhaeren | 51.64 | Q | |
| 2 | Varg Königsmark | 51.78 | Q | |
| 3 | Xavier Carrión | 51.80 | Q | |
| 4 | Amadou Ndiaye | 51.83 | q | |
| 5 | Francesco Patano | 52.51 | q | |
| 6 | Anatoliy Synyanskyy | 53.20 | ||
| 7 | Tait Nystuen | 53.21 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Boniface Mucheru Tumuti | 51.46 | Q | |
| 2 | José Bencosme De Leon | 51.86 | Q | |
| 3 | Michael Cochrane | 52.25 | Q | |
| 4 | Tobias Giehl | 52.28 | q | |
| 5 | Sasha Alexeenko | 52.71 | ||
| 6 | Nolan Williams | 54.67 | ||
| 7 | Damien Edouard | 55.31 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Takatoshi Abe | 50.53 | Q | |
| 2 | Zied Azizi | 51.40 | Q | |
| 3 | Chen Chieh | 52.26 | Q | |
| 4 | Radek Fischer | 52.64 | ||
| 5 | Peter Marx | 52.89 | ||
| 6 | Abdel Malik Lahoulou | 53.00 | ||
| 7 | Nejmi Burnside | 54.17 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Hederson Estefani | 52.07 | Q | |
| 2 | Patrick Maher | 52.46 | Q | |
| 3 | Øyvind Kjerpeset | 52.82 | Q | |
| 4 | Steven White | 53.27 | ||
| 5 | Ali Al-Ghamdi | 56.04 | ||
| 6 | Daniel Chan | 58.46 | ||
| Stéphane Zenou-Yato | DNF |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | Jehue Gordon | 51.58 | Q | |
| 2 | Leslie Murray | 51.94 | Q | |
| 3 | Juan Stenner | 52.29 | Q | |
| 4 | Hakim Reguieg | 52.85 | ||
| 5 | Juan Pablo Martínez | 52.88 | ||
| 6 | Rasmus Mägi | 53.86 | ||
| 7 | Adrian Minca | 56.44 |
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
| 1 | João de Oliveira | 51.92 | Q | |
| 2 | Jonathan Puemi | 53.25 | Q | |
| 3 | Sheroid Evans | 53.44 | Q | |
| 4 | José Castañeda | 53.62 | ||
| 5 | Mitja Lindic | 54.15 | ||
| 6 | Abdul Samsuddin | 54.21 | ||
| 7 | Dmitriy Koblov | 54.31 |
According to an unofficial count, 49 athletes from 38 countries participated in the event.