| Event: | Men's 400 metres |
| Competition: | 2018 IAAF World Indoor Championships |
| Venue: | Arena Birmingham |
| Dates: | 2–3 March |
| Competitors: | 47 |
| Nations: | 35 |
| Win Value: | 45.47 |
| Gold: | Pavel Maslák |
| Goldnoc: | CZE |
| Silver: | Michael Cherry |
| Silvernoc: | USA |
| Bronze: | Deon Lendore |
| Bronzenoc: | TTO |
| Prev: | 2016 |
| Next: | 2022 |
The men's 400 metres at the 2018 IAAF World Indoor Championships took place on 2 and 3 March 2018.[1] [2]
For the first time ever in a World Championship, every runner in a single preliminary heat was disqualified. It was the third heat, where first returning silver medalist Abdalelah Haroun false started himself out of the heat. #5 runner of all time[3] Bralon Taplin won the heat, but he and the other three remaining runners Austris Karpinskis, Alonzo Russell and Steven Gayle were then disqualified for lane violations.[4]
2012 Champion Nery Brenes also found himself disqualified after winning the fifth heat.[5] With two place qualifiers missing, it opened the door for Juander Santos and Mikhail Litvin to take the extra time qualification positions in the semi-final round.
In the final, Óscar Husillos from lane 6 was first to the break line and took the lead with a lap to go, holding the lead to cross the finish line first in a time of 44.92. However, Husillos and Luguelín Santos were disqualified for lane violations, giving Pavel Maslák his third consecutive championship, Michael Cherry the silver, and Deon Lendore the bronze.[6] [7]
The heats were started on 2 March at 11:20.[8]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 6 | 46.45 | Q | |||
| 2 | 6 | 5 | 46.51 | Q | |||
| 3 | 1 | 5 | 46.57 | Q | |||
| 4 | 1 | 6 | 46.68 | Q | |||
| 5 | 5 | 6 | 46.77 | Q | |||
| 6 | 6 | 6 | 46.80 | Q | |||
| 7 | 5 | 5 | 46.81 | Q | |||
| 8 | 6 | 3 | 46.83 | q | |||
| 9 | 6 | 4 | 46.86 | q | |||
| 10 | 2 | 5 | 46.87 | Q | |||
| 11 | 2 | 4 | 46.91 | q | |||
| 12 | 2 | 3 | 46.92 | q | |||
| 13 | 1 | 3 | 46.96 | q | |||
| 14 | 5 | 4 | 46.99 | q | |||
| 15 | 4 | 5 | 46.99 | Q | |||
| 16 | 1 | 4 | 47.02 | q | |||
| 17 | 4 | 6 | 47.13 | Q | |||
| 18 | 4 | 3 | 47.16 | q | |||
| 19 | 4 | 4 | 47.45 | ||||
| 20 | 1 | 2 | 49.20 | NR | |||
| 21 | 6 | 1 | 49.20 | SB | |||
| 22 | 2 | 1 | 49.88 | SB | |||
| 23 | 2 | 2 | 49.92 | PB | |||
| 24 | 4 | 2 | 49.98 | NR | |||
| 25 | 6 | 2 | 51.02 | PB | |||
| 3 | 5 | 162.8[9] | |||||
| 3 | 6 | 163.3(a)[10] | |||||
| 3 | 2 | 163.3(a) | |||||
| 3 | 4 | 163.3(a) | |||||
| 3 | 3 | 163.3(a) | |||||
| 5 | 3 | 163.3(a) | |||||
| 5 | 2 |
The semifinals were started on 2 March at 21:06.[11]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 5 | 45.69 | Q | |||
| 2 | 2 | 6 | 45.73 | Q | |||
| 3 | 1 | 3 | 46.31 | Q, SB | |||
| 4 | 3 | 4 | 46.32 | Q | |||
| 5 | 1 | 6 | 46.33 | Q | |||
| 6 | 3 | 6 | 46.33 | Q | |||
| 7 | 3 | 5 | 46.37 | ||||
| 8 | 2 | 4 | 46.39 | ||||
| 9 | 1 | 5 | 46.69 | ||||
| 10 | 1 | 4 | 46.73 | ||||
| 11 | 2 | 2 | 46.83 | PB | |||
| 12 | 2 | 1 | 46.91 | ||||
| 13 | 1 | 2 | 47.04 | ||||
| 14 | 2 | 3 | 47.14 | ||||
| 15 | 1 | 1 | 47.14 | ||||
| 16 | 3 | 1 | 47.94 | ||||
| 17 | 3 | 2 | 48.53 | ||||
| 3 | 3 |
The final was started on 3 March at 20:20.[12]
| Rank | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|
| 45.47 | SB | ||||
| 45.84 | |||||
| 46.37 | |||||
| 4 | 46.44 | ||||
| DQ | 163.3(b)[13] | page=44.92 | |||
| DQ | 163.3(b)[14] |