Athletics at the 2018 Commonwealth Games – Men's 400 metres
The men's 400 metres at the 2018 Commonwealth Games, as part of the athletics programme, took place in the Carrara Stadium between 8 and 10 April 2018.Records
Prior to this competition, the existing world and Games records were as follows:
Schedule
The schedule was as follows:
All times are Australian Eastern Standard TimeResults
First round
The first round consisted of six heats. The three fastest competitors per heat advanced to the semifinals.
;Heat 1
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 7 | | 0.213 | 45.68 | | |
| 2 | 1 | | 0.167 | 45.70 | | |
| 3 | 4 | | 0.159 | 46.09 | | |
| 4 | 2 | | 0.162 | 46.16 | | |
| 5 | 8 | | 0.154 | 46.78 | | |
| 6 | 6 | | 0.187 | 47.23 | | |
| 7 | 3 | | 0.187 | 47.45 | | |
| 8 | 5 | | 0.179 | 51.59 | | |
;Heat 2
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 4 | | 0.206 | 46.01 | | |
| 2 | 3 | | 0.170 | 46.41 | | |
| 3 | 5 | | 0.188 | 46.45 | | |
| 4 | 7 | | 0.197 | 46.57 | | |
| 5 | 8 | | 0.177 | 48.66 | | |
| 6 | 2 | | 0.192 | 49.10 | | |
| 6 | | 0.237 | | | |
;Heat 3
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 5 | | 0.167 | 46.42 | | |
| 2 | 3 | | 0.170 | 46.66 | | |
| 3 | 7 | | 0.220 | 46.92 | | |
| 4 | 2 | | 0.196 | 47.19 | | |
| 5 | 4 | | 0.145 | 48.38 | | |
| 6 | 6 | | 0.162 | 49.98 | | |
| 7 | 1 | | 0.163 | 50.35 | | |
| 8 | | 0.155 | | | |
;Heat 4
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 8 | | 0.151 | 45.96 | | |
| 2 | 6 | | 0.182 | 45.99 | | |
| 3 | 5 | | 0.171 | 46.17 | | |
| 4 | 7 | | 0.282 | 47.32 | | |
| 5 | 4 | | 0.163 | 48.11 | | |
| 6 | 3 | | 0.176 | 49.07 | | |
| 2 | | | | | |
;Heat 5
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 2 | | 0.194 | 45.39 | | |
| 2 | 7 | | 0.146 | 45.68 | | |
| 3 | 6 | | 0.187 | 45.70 | | |
| 4 | 4 | | 0.197 | 45.84 | | |
| 5 | 3 | | 0.167 | 46.97 | | |
| 6 | 8 | | 0.175 | 47.27 | | |
| 7 | 5 | | 0.165 | 49.40 | | |
;Heat 6
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 1 | | 0.160 | 45.11 | | |
| 2 | 6 | | 0.143 | 46.15 | | |
| 3 | 4 | | 0.164 | 46.32 | | |
| 4 | 5 | | 0.141 | 46.83 | | |
| 5 | 7 | | 0.166 | 47.91 | | |
| 6 | 8 | | 0.196 | 48.39 | | |
| 7 | 2 | | 0.153 | 48.40 | | |
| 3 | | | | | |
Semifinals
Three semi-finals were held. The two fastest competitors per semi advanced to the final.
;Semifinal 1
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 6 | | 0.205 | 45.00 | | |
| 2 | 4 | | 0.162 | 45.38 | | |
| 3 | 5 | | 0.189 | 45.55 | | |
| 4 | 8 | | 0.181 | 46.05 | | |
| 5 | 3 | | 0.172 | 46.61 | | |
| 6 | 7 | | 0.167 | 46.77 | | |
| 7 | 2 | | 0.159 | 47.03 | | |
| 8 | 1 | | 0.169 | 47.39 | | |
;Semifinal 2
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 6 | | 0.166 | 45.44 | | |
| 2 | 8 | | 0.157 | 45.54 | | |
| 3 | 7 | | 0.168 | 45.85 | | |
| 4 | 5 | | 0.196 | 46.06 | | |
| 5 | 3 | | 0.168 | 46.51 | | |
| 6 | 4 | | 0.199 | 47.21 | | |
| 7 | 1 | | 0.162 | 47.33 | | |
| 8 | 2 | | 0.164 | 47.44 | | |
;Semifinal 3
| Rank | Lane | Name | Reaction Time | Result | Notes | Qual. |
| 1 | 6 | | 0.132 | 45.44 | | |
| 2 | 5 | | 0.180 | 45.77 | | |
| 3 | 4 | | 0.250 | 46.19 | | |
| 4 | 3 | | 0.152 | 46.26 | | |
| 5 | 1 | | 0.174 | 46.34 | | |
| 6 | 7 | | 0.155 | 46.68 | | |
| 7 | 8 | | 0.213 | 47.25 | | |
| 8 | 2 | | 0.140 | 48.62 | | |
Final
The medals were determined in the final.
| Rank | Lane | Name | Reaction Time | Result | Notes |
| 4 | | 0.195 | 44.35 | |
| 7 | | 0.178 | 45.09 | |
| 3 | | 0.162 | 45.11 | |
| 4 | 6 | | 0.165 | 45.31 | |
| 5 | 5 | | 0.163 | 45.38 | |
| 6 | 1 | | 0.155 | 45.56 | |
| 7 | 2 | | 0.160 | 45.64 | |
| 8 | | 0.204 | | |
