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 women's 400 metres hurdles at the 2004 Summer Olympics as part of the athletics program were held at the Athens Olympic Stadium from August 21 to 25.
The women's 400 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 15, 16 and 18 August. The world-leader prior to the competition, Sanya Richards, was regarded as the favourite in the event, although her previous failure to convert circuit dominance to major championship success raised some doubts. Reigning Olympic and world champion Christine Ohuruogu entered the championships as only the 25th fastest in the world that year, although a low-key run up also preceded her previous victories. Jamaicans Shericka Williams and Novlene Williams-Mills were predicted as possible medallists, while Russian Antonina Krivoshapka held the second fastest time in the world prior to the tournament.
The men's 60 metres hurdles competition at the 2010 IAAF World Indoor Championships was held at the ASPIRE Dome on 12 and 14 March.
The women's 400 metres competition at the 2012 Summer Olympics took place between 3–5 August at the Olympic Stadium.
The women's 4 × 400 metres relay at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 29 and 30 August.
The women's 400 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 19, 2016.
The men's 800 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 19, 2016.
The women's 800 metres at the 2016 IAAF World Indoor Championships took place on March 19 and 20, 2016.
The men's 1500 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 20, 2016.
The men's 3000 metres at the 2016 IAAF World Indoor Championships took place on March 18 and 20, 2016.
The men's 60 metres hurdles at the 2016 IAAF World Indoor Championships took place on March 19 and 20, 2016.
The men's 800 metres at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 5, 6, and 8 August.
The men's 4 × 400 metres relay at the 2017 World Championships in Athletics was held at the London Olympic Stadium on 12 August.
The men's 400 metres event at the 2020 Summer Olympics took place between 1 and 5 August 2021 at the Olympic Stadium. Approximately fifty athletes were expected to compete; the exact number was dependent on how many nations use universality places to enter athletes in addition to the 48 qualifying through time or ranking. 48 athletes from 33 nations competed. The event was won by Steven Gardiner of the Bahamas, with Anthony Zambrano of Colombia taking silver. Those were the first medals in the men's 400 metres for each of those two nations. Kirani James of Grenada won his third consecutive medal in the event with his bronze, making him the first man to earn three medals in the 400 metres.
The women's 400 metres at the 2022 World Athletics Indoor Championships took place on 18 and 19 March 2022.
The men's 800 metres at the 2022 World Athletics Indoor Championships took place on 18 and 19 March 2022.
The women's 800 metres at the 2022 World Athletics Indoor Championships took place on 19–20 March 2022.
The women's 4 × 400 metres relay at the 2022 World Athletics Indoor Championships took place on 20 March 2022.
The men's 400 metres hurdles at the 2022 World Athletics Championships was held at the Hayward Field in Eugene from 16 to 19 July 2022.
