Athletics at the 2016 Summer Olympics – Men's 400 metres
Rank Lane Name Nationality Reaction Time Notes
1 5 Lalonde Gordon Trinidad and Tobago 0.153 45.24 Q
2 4 Luka Janežič Slovenia 0.148 45.33 Q
3 6 Baboloki Thebe Botswana 0.155 45.41 Q
4 1 Chris Brown Bahamas 0.147 45.56 SB
5 2 Martyn Rooney Great Britain 0.154 45.60
6 7 Julian Jrummi Walsh Japan 0.149 46.37
7 8 Gustavo Cuesta Dominican Republic 0.143 46.92
8 3 James Chiengjiek Refugee Olympic Team 0.213 52.89
Results -- Round 1
The men's 400 metres event at the 2016 Summer Olympics took place between 12 and 14 August at the Olympic Stadium.