# 2010 World Junior Championships in Athletics – Men's 400 metres hurdles

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.

## Medalists

| Gold | Jehue Gordon Trinidad and Tobago |
| Silver | Takatoshi Abe Japan |
| Bronze | Leslie Murray U.S. Virgin Islands |

## Results
### Final

23 July
| Rank | Name | Nationality | Time |
| | Jehue Gordon | Trinidad and Tobago | 49.30 |
| | Takatoshi Abe | Japan | 49.46 |
| | Leslie Murray | U.S. Virgin Islands | 50.22 |
| 4 | Varg Königsmark | Germany | 50.47 |
| 5 | Jack Green | United Kingdom | 50.49 |
| 6 | Stef Vanhaeren | Belgium | 50.99 |
| 7 | Emir Bekrić | Serbia | 51.06 |
| 8 | Boniface Mucheru Tumuti | Kenya | 52.16 |

### Semifinals

22 July

#### Semifinal 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Stef Vanhaeren | Belgium | 50.91 | Q |
| 2 | Leslie Murray | U.S. Virgin Islands | 51.25 | Q |
| 3 | Hederson Estefani | Brazil | 51.59 | |
| 4 | Tobias Giehl | Germany | 51.77 | |
| 5 | Zied Azizi | Tunisia | 51.84 | |
| 6 | Juan Stenner | Mexico | 52.61 | |
| 7 | Chen Chieh | Chinese Taipei | 52.98 | |
| 8 | Amadou Ndiaye | Senegal | 54.40 | |

#### Semifinal 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Takatoshi Abe | Japan | 50.45 | Q |
| 2 | Varg Königsmark | Germany | 50.87 | Q |
| 3 | Emir Bekrić | Serbia | 50.91 | q |
| 4 | João de Oliveira | Brazil | 52.53 | |
| 5 | Francesco Patano | Italy | 52.61 | |
| 6 | Michael Cochrane | New Zealand | 52.71 | |
| 7 | Sheroid Evans | United States | 53.03 | |
| 8 | Jeremiah Mutai | Kenya | 55.02 | |

#### Semifinal 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Jehue Gordon | Trinidad and Tobago | 50.54 | Q |
| 2 | Jack Green | United Kingdom | 51.14 | Q |
| 3 | Boniface Mucheru Tumuti | Kenya | 51.22 | q |
| 4 | José Bencosme De Leon | Italy | 52.15 | |
| 5 | Xavier Carrión | Spain | 52.33 | |
| 6 | Patrick Maher | Ireland | 52.46 | |
| 7 | Øyvind Kjerpeset | Norway | 53.33 | |
| 8 | Jonathan Puemi | Switzerland | 53.95 | |

### Heats

21 July

#### Heat 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Emir Bekrić | Serbia | 51.68 | Q |
| 2 | Jack Green | United Kingdom | 52.16 | Q |
| 3 | Jeremiah Mutai | Kenya | 52.53 | Q |
| 4 | Le Roux Hamman | South Africa | 52.66 | |
| 5 | Mohamed Yousef Karam | Kuwait | 54.63 | |
| 6 | Javarn Gallimore | Jamaica | 55.99 | |
| 7 | Tim Crowe | Ireland | 56.27 | |

#### Heat 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Stef Vanhaeren | Belgium | 51.64 | Q |
| 2 | Varg Königsmark | Germany | 51.78 | Q |
| 3 | Xavier Carrión | Spain | 51.80 | Q |
| 4 | Amadou Ndiaye | Senegal | 51.83 | q |
| 5 | Francesco Patano | Italy | 52.51 | q |
| 6 | Anatoliy Synyanskyy | Ukraine | 53.20 | |
| 7 | Tait Nystuen | Canada | 53.21 | |

#### Heat 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Boniface Mucheru Tumuti | Kenya | 51.46 | Q |
| 2 | José Bencosme De Leon | Italy | 51.86 | Q |
| 3 | Michael Cochrane | New Zealand | 52.25 | Q |
| 4 | Tobias Giehl | Germany | 52.28 | q |
| 5 | Sasha Alexeenko | Australia | 52.71 | |
| 6 | Nolan Williams | Jamaica | 54.67 | |
| 7 | Damien Edouard | Mauritius | 55.31 | |

#### Heat 4

| Rank | Name | Nationality | Time | Notes |
| 1 | Takatoshi Abe | Japan | 50.53 | Q |
| 2 | Zied Azizi | Tunisia | 51.40 | Q |
| 3 | Chen Chieh | Chinese Taipei | 52.26 | Q |
| 4 | Radek Fischer | Czech Republic | 52.64 | |
| 5 | Peter Marx | South Africa | 52.89 | |
| 6 | Abdel Malik Lahoulou | Algeria | 53.00 | |
| 7 | Nejmi Burnside | Bahamas | 54.17 | |

#### Heat 5

| Rank | Name | Nationality | Time | Notes |
| 1 | Hederson Estefani | Brazil | 52.07 | Q |
| 2 | Patrick Maher | Ireland | 52.46 | Q |
| 3 | Øyvind Kjerpeset | Norway | 52.82 | Q |
| 4 | Steven White | United States | 53.27 | |
| 5 | Ali Al-Ghamdi | Saudi Arabia | 56.04 | |
| 6 | Daniel Chan | Canada | 58.46 | |
| | Stéphane Zenou-Yato | France | DNF | |

#### Heat 6

| Rank | Name | Nationality | Time | Notes |
| 1 | Jehue Gordon | Trinidad and Tobago | 51.58 | Q |
| 2 | Leslie Murray | U.S. Virgin Islands | 51.94 | Q |
| 3 | Juan Stenner | Mexico | 52.29 | Q |
| 4 | Hakim Reguieg | France | 52.85 | |
| 5 | Juan Pablo Martínez | Dominican Republic | 52.88 | |
| 6 | Rasmus Mägi | Estonia | 53.86 | |
| 7 | Adrian Minca | Romania | 56.44 | |

#### Heat 7

| Rank | Name | Nationality | Time | Notes |
| 1 | João de Oliveira | Brazil | 51.92 | Q |
| 2 | Jonathan Puemi | Switzerland | 53.25 | Q |
| 3 | Sheroid Evans | United States | 53.44 | Q |
| 4 | José Castañeda | Mexico | 53.62 | |
| 5 | Mitja Lindic | Slovenia | 54.15 | |
| 6 | Abdul Samsuddin | Malaysia | 54.21 | |
| 7 | Dmitriy Koblov | Kazakhstan | 54.31 | |

## Participation

According to an unofficial count, 49 athletes from 38 countries participated in the event.
* Algeria (1)
* Australia (1)
* Bahamas (1)
* Belgium (1)
* Brazil (2)
* Canada (2)
* Chinese Taipei (1)
* Czech Republic (1)
* Dominican Republic (1)
* Estonia (1)
* France (2)
* Germany (2)
* Ireland (2)
* Italy (2)
* Jamaica (2)
* Japan (1)
* Kazakhstan (1)
* Kenya (2)
* Kuwait (1)
* Malaysia (1)
* Mauritius (1)
* Mexico (2)
* New Zealand (1)
* Norway (1)
* Romania (1)
* Saudi Arabia (1)
* Senegal (1)
* Serbia (1)
* Slovenia (1)
* South Africa (2)
* Spain (1)
* Switzerland (1)
* Trinidad and Tobago (1)
* Tunisia (1)
* Ukraine (1)
* United Kingdom (1)
* United States (2)
* U.S. Virgin Islands (1)