The men's 400 metres at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 20 to 23. Sixty-two athletes from 48 nations competed. The event was won by Jeremy Wariner of the United States, the sixth in what would ultimately be 7 consecutive American victories stretching from 1984 to 2008 and the 18th overall title in the event by the United States. The United States swept the podium for the 4th time in the event.
The women's 400 metres at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 21 to 24.
The men's 400 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 18, 19 and 21 August.
The men's 400 metres at the 2011 IPC Athletics World Championships is held at the QEII Stadium on 22-23 and 26–29 January
The men's 400 metres at the 2019 World Para Athletics Championships was held in Dubai from 7–15 November.
The women's 200 metres event at the 2021 Summer World University Games was held on 3 and 4 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 4 × 400 metres relay event at the 2021 Summer World University Games was held on 5 and 6 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 800 metres event at the 2021 Summer World University Games was held on 4, 5 and 6 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 4 × 100 metres relay event at the 2021 Summer World University Games was held on 5 and 6 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 4 × 400 metres relay event at the 2021 Summer World University Games was held on 5 and 6 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 110 metres hurdles event at the 2021 Summer World University Games was held on 4 and 5 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 4 × 100 metres relay event at the 2021 Summer World University Games was held on 5 and 6 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 100 metres event at the 2021 Summer World University Games was held on 1 and 2 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 400 metres event at the 2021 Summer World University Games was held on 1, 2 and 3 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 100 metres event at the 2021 Summer World University Games was held on 1 and 2 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 400 metres hurdles event at the 2021 Summer World University Games was held on 2, 3 and 4 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 400 metres hurdles event at the 2021 Summer World University Games was held on 1, 2 and 3 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The men's 200 metres event at the 2021 Summer World University Games was held on 3 and 4 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 800 metres event at the 2021 Summer World University Games was held on 2 and 3 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
The women's 100 metres hurdles event at the 2021 Summer World University Games was held on 3 and 4 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.
