# 2010 World Junior Championships in Athletics – Men's 800 metres

The men's 800 metres event at the 2010 World Junior Championships in Athletics was held in Moncton, New Brunswick, Canada, at Moncton Stadium on 23, 24 and 25 July.

## Medalists

| Gold | David Mutinda Kenya |
| Silver | Casimir Loxsom United States |
| Bronze | Robby Andrews United States |

## Results
### Final

25 July
| Rank | Name | Nationality | Time |
| | David Mutinda | Kenya | 1:46.41 |
| | Casimir Loxsom | United States | 1:46.57 |
| | Robby Andrews | United States | 1:47.00 |
| 4 | Niall Brooks | United Kingdom | 1:47.02 |
| 5 | Samir Dahmani | France | 1:47.82 |
| 6 | Dickson Tuwei | Kenya | 1:48.97 |
| 7 | Mohamed Al-Garni | Qatar | 1:50.16 |
| 8 | Pierre-Ambroise Bosse | France | 1:53.52 |

### Semifinals

24 July

#### Semifinal 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Dickson Tuwei | Kenya | 1:47.51 | Q |
| 2 | Mohamed Al-Garni | Qatar | 1:48.15 | Q |
| 3 | Samir Dahmani | France | 1:48.31 | q |
| 4 | Halit Kiliç | Turkey | 1:48.63 | |
| 5 | Kuey Diew | Australia | 1:49.14 | |
| 6 | Adam Cotton | United Kingdom | 1:50.25 | |
| 7 | Abdul Aziz Mohamed | Saudi Arabia | 1:50.78 | |
| 8 | Žan Rudolf | Slovenia | 1:53.21 | |

#### Semifinal 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Robby Andrews | United States | 1:48.76 | Q |
| 2 | Niall Brooks | United Kingdom | 1:49.01 | Q |
| 3 | Miroslav Burian | Czech Republic | 1:49.07 | |
| 4 | Anthony Romaniw | Canada | 1:49.26 | |
| 5 | Pablo Fernández | Spain | 1:55.87 | |
| | Esrael Awoke | Ethiopia | DQ | IAAF rule 163.3 |
| | Mark Patterson | Ireland | DQ | IAAF rule 163.3 |
| | Amine El-Manaoui | Morocco | DQ | IAAF rule 163.2 |

#### Semifinal 3

| Rank | Name | Nationality | Time | Notes |
| 1 | Casimir Loxsom | United States | 1:46.91 | Q |
| 2 | David Mutinda | Kenya | 1:48.04 | Q |
| 3 | Pierre-Ambroise Bosse | France | 1:48.38 | q |
| 4 | Hamza Driouch | Qatar | 1:49.33 | |
| 5 | Thomas Roth | Norway | 1:49.39 | |
| 6 | Charles Grethen | Luxembourg | 1:52.09 | |
| 7 | Adrian Plummer | Australia | 1:52.25 | |
| 8 | Vasiliy Sadilov | Russia | 1:52.68 | |

### Heats

23 July

#### Heat 1

| Rank | Name | Nationality | Time | Notes |
| 1 | Pierre-Ambroise Bosse | France | 1:50.60 | Q |
| 2 | Robby Andrews | United States | 1:50.80 | Q |
| 3 | Vasiliy Sadilov | Russia | 1:50.92 | Q |
| 4 | Anthony Romaniw | Canada | 1:51.00 | q |
| 5 | Ahmed Abdel Karim Farag | Egypt | 1:51.49 | |
| 6 | Omar Bejaoui | Spain | 1:53.17 | |
| 7 | Jerry Lauto | Vanuatu | 2:02.04 | |

#### Heat 2

| Rank | Name | Nationality | Time | Notes |
| 1 | Dickson Tuwei | Kenya | 1:49.84 | Q |
| 2 | Mohamed Al-Garni | Qatar | 1:49.95 | Q |
| 3 | Adam Cotton | United Kingdom | 1:50.24 | Q |
| 4 | Mark Patterson | Ireland | 1:50.47 | q |
| 5 | Farkhod Kuralov | Tajikistan | 1:51.39 | |
| 6 | Anthonio Mascoll | Barbados | 1:51.42 | |
| 7 | Christopher Sandoval | Mexico | 1:52.54 | |
| 8 | Tomás Squella | Chile | 1:52.90 | |

#### Heat 3

| Rank | Name | Nationality | Time | Notes |
| 1 | David Mutinda | Kenya | 1:49.37 | Q |
| 2 | Hamza Driouch | Qatar | 1:49.54 | Q |
| 3 | Amine El-Manaoui | Morocco | 1:49.78 | Q |
| 4 | Thomas Roth | Norway | 1:49.84 | q |
| 5 | Žan Rudolf | Slovenia | 1:50.28 | q |
| 6 | Jorge Batista | Portugal | 1:51.00 | |
| 7 | Glen Ballam | New Zealand | 1:51.96 | |
| | Alex Cherop | Uganda | DQ | IAAF rule 163.3 |

#### Heat 4

| Rank | Name | Nationality | Time | Notes |
| 1 | Casimir Loxsom | United States | 1:49.47 | Q |
| 2 | Esrael Awoke | Ethiopia | 1:49.66 | Q |
| 3 | Pablo Fernández | Spain | 1:49.71 | Q |
| 4 | Adrian Plummer | Australia | 1:50.00 | q |
| 5 | Charles Grethen | Luxembourg | 1:50.74 | q |
| 6 | Adrian Cirnaru | Romania | 1:52.06 | |
| 7 | Michel Berning | Germany | 1:53.30 | |
| 8 | Michael James | Saint Lucia | 1:57.51 | |

#### Heat 5

| Rank | Name | Nationality | Time | Notes |
| 1 | Niall Brooks | United Kingdom | 1:51.10 | Q |
| 2 | Miroslav Burian | Czech Republic | 1:51.23 | Q |
| 3 | Halit Kiliç | Turkey | 1:51.25 | Q |
| 4 | Darren McBrearty | Ireland | 1:51.41 | |
| 5 | Erik Estrada | Puerto Rico | 1:52.11 | |
| 6 | Thomas Eide | Norway | 1:52.67 | |
| 7 | Chouaib Hamdane | Algeria | 1:53.15 | |
| 8 | Abedalaziz Al-Merdek | Jordan | 1:53.42 | |

#### Heat 6

| Rank | Name | Nationality | Time | Notes |
| 1 | Samir Dahmani | France | 1:50.80 | Q |
| 2 | Abdul Aziz Mohamed | Saudi Arabia | 1:51.04 | Q |
| 3 | Kuey Diew | Australia | 1:51.04 | Q |
| 4 | Taras Bybyk | Ukraine | 1:51.15 | |
| 5 | Andreas Lange | Germany | 1:51.18 | |
| 6 | Rickard Gunnarsson | Sweden | 1:52.65 | |
| 7 | Fabrice Tambwe | DR Congo | 1:58.23 | |
| | Abdoul Aziz Kimba | Niger | DQ | IAAF rule 163.3 |

## Participation

According to an unofficial count, 47 athletes from 37 countries participated in the event.
* Algeria (1)
* Australia (2)
* Barbados (1)
* Canada (1)
* Chile (1)
* DR Congo (1)
* Czech Republic (1)
* Egypt (1)
* Ethiopia (1)
* France (2)
* Germany (2)
* Ireland (2)
* Jordan (1)
* Kenya (2)
* Luxembourg (1)
* Mexico (1)
* Morocco (1)
* New Zealand (1)
* Niger (1)
* Norway (2)
* Portugal (1)
* Puerto Rico (1)
* Qatar (2)
* Romania (1)
* Russia (1)
* Saint Lucia (1)
* Saudi Arabia (1)
* Slovenia (1)
* Spain (2)
* Sweden (1)
* Tajikistan (1)
* Turkey (1)
* Uganda (1)
* Ukraine (1)
* United Kingdom (2)
* United States (2)
* Vanuatu (1)