2017 World Championships in Athletics – Men's 400 metres
The men's 400 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 5, 6, and 8 August.
Summary
had qualified for the final, but was barred from competing as he was under quarantine due to the norovirus outbreak in one of the athletes' hotels. Steven Gardiner started fastest, with Wayde van Niekerk equal to him by about 200 metres, and going on to build a lead through the final turn. Van Niekerk had time to slow down, winning comfortably ahead of Gardiner, with Abdalelah Haroun finishing quickly from dead last off the turn to claim bronze.Records
Before the competition records were as follows:| Record | Athlete | Date | Location | ||
| World | 43.03 | Wayde van Niekerk | Rio de Janeiro, Brazil | ||
| Championship | 43.18 | Michael Johnson | 26 Aug 1999 | Sevilla, Spain | |
| World leading | 43.62 | Wayde van Niekerk | 6 Jul 2017 | Lausanne, Switzerland | |
| African | 43.03 | Wayde van Niekerk | 14 Aug 2016 | Rio de Janeiro, Brazil | |
| Asian | 43.93 | Yousef Masrahi | 23 Aug 2015 | Beijing, China | |
| NACAC | 43.18 | Michael Johnson | 26 Aug 1999 | Sevilla, Spain | |
| South American | 44.29 | Sanderlei Parrela | 26 Aug 1999 | Sevilla, Spain | |
| European | 44.33 | Thomas Schönlebe | 3 Sep 1987 | Rome, Italy | |
| Oceanian | 44.38 | Darren Clark | 26 Sep 1988 | Seoul, South Korea |
The following records were set at the competition:
| Record | Athlete | Date | ||
| Bahamian | 43.89 | Steven Gardiner | 6 Aug 2017 |
Qualification standard
The standard to qualify automatically for entry was 45.50.Schedule
The event schedule, in local time, was as follows:| Date | Time | Round |
| 5 August | 10:45 | Heats |
| 6 August | 19:40 | Semifinals |
| 8 August | 21:50 | Final |
Results
Heats
The first round took place on 5 August in six heats as follows:| Heat | 1 | 2 | 3 | 4 | 5 | 6 |
| Start time | 10:45 | 10:53 | 11:02 | 11:11 | 11:21 | 11:29 |
| Photo finish |
The first three in each heat and the next six fastest qualified for the semifinals. The overall results were as follows:
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 5 | 6 | Isaac Makwala | 44.55 | ||
| 2 | 4 | 7 | Steven Gardiner | 44.75 | ||
| 3 | 3 | 6 | Baboloki Thebe | 44.82 | ||
| 4 | 6 | 6 | Nathon Allen | 44.91 | ||
| 5 | 1 | 7 | Fred Kerley | 44.92 | ||
| 6 | 6 | 3 | Gil Roberts | 44.92 | ||
| 7 | 3 | 8 | Demish Gaye | 44.92 | ||
| 8 | 5 | 9 | LaShawn Merritt | 45.00 | ||
| 9 | 1 | 8 | Lalonde Gordon | 45.02 | , | |
| 10 | 5 | 2 | Jamal Walton | 45.05 | ||
| 11 | 1 | 6 | Kevin Borlée | 45.09 | ||
| 12 | 1 | 9 | Pavel Maslák | 45.10 | , | |
| 13 | 4 | 5 | Wilbert London | 45.10 | ||
| 14 | 5 | 5 | Óscar Husillos | 45.22 | , | |
| 15 | 6 | 9 | Abdalelah Haroun | 45.27 | ||
| 16 | 2 | 5 | Wayde van Niekerk | 45.27 | ||
| 17 | 1 | 5 | Matthew Hudson-Smith | 45.31 | ||
| 18 | 4 | 4 | Brian Gregan | 45.37 | ||
| 19 | 3 | 3 | Dwayne Cowan | 45.39 | ||
| 20 | 3 | 7 | Boniface Ontuga Mweresa | 45.58 | ||
| 21 | 3 | 9 | Rafał Omelko | 45.69 | ||
| 22 | 4 | 9 | Jonathan Borlée | 45.70 | ||
| 23 | 2 | 2 | Davide Re | 45.71 | ||
| 24 | 4 | 8 | Luguelín Santos | 45.73 | ||
| 25 | 5 | 3 | Raymond Kibet | 45.75 | ||
| 26 | 5 | 8 | Martyn Rooney | 45.75 | ||
| 27 | 2 | 3 | Machel Cedenio | 45.77 | ||
| 28 | 1 | 4 | Lucas Carvalho | 45.86 | ||
| 29 | 4 | 3 | Mamoudou Hanne | 45.89 | ||
| 30 | 2 | 4 | Teddy Atine-Venel | 45.90 | ||
| 31 | 2 | 6 | Yoandys Lescay | 45.93 | ||
| 32 | 5 | 7 | Renny Quow | 45.95 | ||
| 33 | 6 | 4 | Mohammad Anas | 45.98 | ||
| 34 | 1 | 3 | Lucas Búa | 46.00 | ||
| 35 | 5 | 1 | Winston George | 46.02 | ||
| 36 | 2 | 1 | Luka Janežič | 46.06 | ||
| 37 | 1 | 2 | Collins Omae Gichana | 46.10 | ||
| 38 | 2 | 9 | Steven Solomon | 46.27 | ||
| 39 | 3 | 4 | Samuel García | 46.37 | ||
| 40 | 3 | 2 | Pieter Conradie | 46.62 | ||
| 41 | 6 | 5 | Samson Oghenewegba Nathaniel | 46.63 | ||
| 42 | 3 | 1 | Warren Hazel | 46.96 | ||
| 43 | 2 | 7 | Kimorie Shearman | 47.05 | ||
| 44 | 4 | 2 | Yilmar Herrera | 47.18 | ||
| 45 | 6 | 8 | Takamasa Kitagawa | 47.35 | ||
| 46 | 6 | 7 | Karabo Sibanda | 47.44 | ||
| 47 | 1 | 1 | Bachir Mahamat | 47.50 | ||
| 48 | 5 | 4 | Sailosi Tubuilagi | 48.98 | ||
| 49 | 3 | 5 | Narek Ghukasyan | 49.70 | ||
| 2 | 8 | Nery Brenes | ||||
| 4 | 6 | Steven Gayle | ||||
| 6 | 2 | Emmanuel Dasor |
Semifinals
The semifinals took place on 6 August in three heats as follows:| Heat | 1 | 2 | 3 |
| Start time | 19:40 | 19:45 | 19:56 |
| Photo finish |
The first two in each heat and the next two fastest qualified for the final. The overall results were as follows:
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 1 | 5 | Steven Gardiner | 43.89 | , | |
| 2 | 1 | 6 | Nathon Allen | 44.19 | , | |
| 3 | 2 | 6 | Wayde van Niekerk | 44.22 | ||
| 4 | 3 | 5 | Isaac Makwala | 44.30 | ||
| 5 | 2 | 5 | Baboloki Thebe | 44.33 | ||
| 6 | 1 | 7 | Fred Kerley | 44.51 | ||
| 7 | 3 | 6 | Demish Gaye | 44.55 | , | |
| 8 | 2 | 9 | Abdalelah Haroun | 44.64 | , | |
| 9 | 2 | 2 | Matthew Hudson-Smith | 44.74 | ||
| 10 | 3 | 7 | Gil Roberts | 44.84 | ||
| 11 | 1 | 9 | Kevin Borlée | 45.10 | ||
| 12 | 1 | 4 | Wilbert London | 45.12 | ||
| 13 | 3 | 9 | Jamal Walton | 45.16 | ||
| 14 | 1 | 3 | Óscar Husillos | 45.16 | ||
| 15 | 2 | 4 | Lalonde Gordon | 45.20 | ||
| 16 | 3 | 3 | Jonathan Borlée | 45.23 | ||
| 17 | 3 | 2 | Pavel Maslák | 45.24 | ||
| 18 | 1 | 2 | Rafał Omelko | 45.37 | ||
| 19 | 2 | 8 | Brian Gregan | 45.42 | ||
| 20 | 2 | 7 | LaShawn Merritt | 45.52 | ||
| 21 | 3 | 8 | Machel Cedenio | 45.91 | ||
| 22 | 2 | 3 | Boniface Ontuga Mweresa | 45.93 | ||
| 23 | 3 | 4 | Davide Re | 45.95 | ||
| 24 | 1 | 8 | Dwayne Cowan | 45.96 |
Final
The final took place on 8 August at 21:54. The results were as follows :| Rank | Lane | Name | Nationality | Time | Notes |
| 6 | Wayde van Niekerk | 43.98 | |||
| 4 | Steven Gardiner | 44.41 | |||
| 3 | Abdalelah Haroun | 44.48 | |||
| 4 | 9 | Baboloki Thebe | 44.66 | ||
| 5 | 5 | Nathon Allen | 44.88 | ||
| 6 | 8 | Demish Gaye | 45.04 | ||
| 7 | 2 | Fred Kerley | 45.23 | ||
| 7 | Isaac Makwala |