2011 World Youth Championships in Athletics – Boys' 400 metres
The Men's 400 metres at the
Stadium Nord Lille Métropole on 6, 7 and 8 July.[1]
Medalists
| Gold | Silver | Bronze |
Arman Hall  United States
|
Alphas Kishoyian  Kenya
|
Patryk Dobek  Poland
|
Records
Prior to the competition, the following records were as follows.
| World Youth Best | Obea Moore (USA)
|
45.14 | Santiago, Chile | 2 September 1995 |
| Championship Record |  Kirani James (GRN)
|
45.24 | Brixen, Italy | 10 July 2009 |
| World Youth Leading | Arman Hall (USA)
|
46.22 | Winter Park, United States | 7 May 2011 |
During the competition, Arman Hall lowered his own world youth-leading 46.22 to post the second-fastest in championship history, 46.01.
Heats
Qualification rule: first 3 of each heat (Q) plus the 3 fastest times (q) qualified.[2]
Heat 1
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 7 | Machel Cedenio |  Trinidad and Tobago |
47.32 | Q |
| 2 | 3 | Shotaro Akiyo |  Japan |
47.74 | Q |
| 3 | 6 | Pieter Conradie |  South Africa |
47.83 | Q |
| 4 | 8 | José de Jesús Fraire |  Mexico |
48.67 | q |
| 5 | 4 | Sibongakonke Matsenjwa |  Swaziland |
48.73 | PB |
| 6 | 2 | Mohamedine Mahamadou |  Niger |
48.78 | PB |
| 7 | 1 | Maykon Pedro da Cunha |  Brazil |
49.32 | PB |
| 8 | 5 | Mohmmed Al Shueili |  Oman |
49.50 |
Heat 2
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 2 | Thomas Jordier |  France |
47.89 | Q, PB |
| 2 | 4 | David Kipkemoi Chemjor | Kenya |
48.15 | Q |
| 3 | 3 | Mateo Ružic |
 Croatia |
48.39 | Q |
| 4 | 5 | Samvel Grigoryan |  Armenia |
49.64 | PB |
| 5 | 8 | Zied Aissa |  Tunisia |
49.72 | |
| 6 | 6 | Lennox Williams |  Jamaica |
50.01 | |
| 7 | 1 | George Manebona |  Solomon Islands |
51.65 | SB |
| - | 7 | Japhet Samuel |  Nigeria |
DQ |
Heat 3
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 6 | Sadam Koumi |  Sudan |
47.59 | Q |
| 2 | 4 | Dongbaek Choi |  South Korea |
47.87 | Q, SB |
| 3 | 2 | Carlos Eduardo Grachet | Brazil |
48.20 | Q |
| 4 | 5 | Jack Sheridan |  Australia |
48.48 | q |
| 5 | 8 | Sondre Nyvold Lid |  Norway |
48.86 | |
| 6 | 1 | Attila Farkas |  Hungary |
49.77 | |
| 7 | 3 | Jordan Geenen | France |
49.96 | |
| 8 | 7 | Abdelkhedere Abdelbassit Abdelrahmane |  Chad |
51.54 | PB |
Heat 4
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Najee Glass |  United States |
47.92 | Q |
| 2 | 1 | Patryk Dobek | Poland |
48.13 | Q |
| 3 | 7 | Timofey Chalyy |  Russia |
48.49 | Q |
| 4 | 5 | Oleksiy Pozdnyakov |  Ukraine |
48.92 | PB |
| 5 | 3 | Nathaniel George |  Canada |
49.90 | |
| 6 | 6 | Sandeep - |  India |
49.94 | |
| 7 | 8 | Sergi Torres |  Spain |
51.42 | |
| 8 | 2 | Omar Alkhatib |  Palestine |
54.93 | PB |
Heat 5
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 3 | Arman Hall | United States |
46.76 | Q |
| 2 | 2 | Brendon Restall | Canada |
47.31 | Q, PB |
| 3 | 7 | Lorenzo Adams | South Africa |
48.05 | Q |
| 4 | 5 | Basheer Atiah Al Barakati |  Saudi Arabia |
49.42 | |
| 5 | 1 | Jørgen Kåshagen | Norway |
50.34 | |
| 6 | 6 | Ever Carranza | Mexico |
50.60 | |
| 7 | 4 | Jatin Jain | India |
54.03 |
Heat 6
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 6 | Jarryd Buchan | Australia |
47.12 | Q, PB |
| 2 | 7 | Takuya Fukunaga | Japan |
47.24 | Q, PB |
| 3 | 1 | Alphas Kishoyian | Kenya |
47.31 | Q |
| 4 | 5 | Rafal Smolen | Poland |
48.04 | q, PB |
| 5 | 4 | Lucas Bua |
Spain |
49.04 | |
| 6 | 3 | Miloš Raovic |
 Serbia |
49.07 | PB |
| 7 | 2 | Lahiru Jamuni |  Sri Lanka |
49.26 | PB |
| - | 8 | Aleksandr Lukyanenko |  Turkmenistan |
DQ |
Heat 7
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 5 | Alex Boyce |  Great Britain |
47.82 | Q, PB |
| 2 | 8 | Andre Wells |  Bahamas |
47.87 | Q |
| 3 | 3 | Ahmed Yahya Al Khayri | Saudi Arabia |
48.78 | Q, PB |
| 4 | 4 | Nitipol Thongpoon |  Thailand |
49.72 | |
| 5 | 1 | Bariadora Friday Tamunosia | Nigeria |
49.97 | |
| 6 | 7 | Dónald Arias |  Costa Rica |
50.25 | |
| 7 | 6 | Usama Al-Gheilani | Oman |
54.25 | |
| - | 2 | Bernardo Baloyes |  Colombia |
DQ |
Semifinals
Qualification rule: first 2 of each heat (Q) plus the 2 fastest times (q) qualified.[3]
Heat 1
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 6 | Takuya Fukunaga | Japan |
47.30 | Q |
| 2 | 3 | Andre Wells | Bahamas |
47.36 | Q |
| 3 | 4 | Najee Glass | United States |
47.42 | |
| 4 | 5 | Jarryd Buchan | Australia |
47.53 | |
| 5 | 8 | David Kipkemoi Chemjor | Kenya |
47.90 | |
| 6 | 7 | Lorenzo Adams | South Africa |
48.01 | |
| 7 | 1 | Timofey Chalyy | Russia |
48.45 | |
| 8 | 2 | José de Jesús Fraire | Mexico |
49.60 |
Heat 2
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 6 | Arman Hall | United States |
46.70 | Q |
| 2 | 7 | Patryk Dobek | Poland |
47.19 | Q, PB |
| 3 | 3 | Thomas Jordier | France |
47.27 | PB |
| 4 | 8 | Carlos Eduardo Grachet | Brazil |
47.58 | PB |
| 5 | 4 | Alex Boyce | Great Britain |
47.96 | |
| 6 | 5 | Dongbaek Choi | South Korea |
48.18 | |
| 7 | 1 | Jack Sheridan | Australia |
49.39 | |
| 8 | 2 | Mateo Ružic |
Croatia |
50.57 |
Heat 3
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 8 | Alphas Kishoyian | Kenya |
46.52 | Q |
| 2 | 6 | Sadam Koumi | Sudan |
47.08 | Q |
| 3 | 4 | Machel Cedenio | Trinidad and Tobago |
47.12 | q |
| 4 | 3 | Brendon Restall | Canada |
47.26 | q, PB |
| 5 | 5 | Shotaro Aikyo | Japan |
47.42 | PB |
| 6 | 7 | Pieter Conradie | South Africa |
47.58 | |
| 7 | 2 | Ahmed Yahya Al Khayri | Saudi Arabia |
48.57 | |
| 1 | Rafal Smolen | Poland |
DQ |
Final
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
 |
4 | Arman Hall | United States |
46.01 | WYL |
 |
6 | Alphas Kishoyian | Kenya |
46.58 | |
 |
8 | Patryk Dobek | Poland |
46.67 | PB |
| 4 | 2 | Machel Cedenio | Trinidad and Tobago |
46.89 | PB |
| 5 | 5 | Takuya Fukunaga | Japan |
47.16 | PB |
| 6 | 7 | Andre Wells | Bahamas |
47.22 | |
| 7 | 1 | Brendon Restall | Canada |
47.34 | |
| 3 | Sadam Koumi | Sudan |
DNF |