Record Timeline
Every record update in this archive, newest first.
| Date | Athlete | Country | Time | Location | Type |
|---|---|---|---|---|---|
| 14 Sept 2025 | Yuki Joseph Nakajima | Japan | 44.44 | Tokyo | Japan Record |
| 20 Aug 2023 | Kentaro Sato | Japan | 44.77 | Budapest | Japan Record |
| 14 Aug 2016 | Wayde van Niekerk | South Africa | 43.03 | Rio de Janeiro | World Record |
| 3 May 2008 | Asami Tanno | Japan | 51.75 | Fukuroi | Japan Record |
| 19 Sept 2005 | Asami Tanno | Japan | 51.80 | Yokohama | Japan Record |
| 5 Jun 2005 | Asami Tanno | Japan | 51.93 | Tokyo | Japan Record |
| 13 Jun 2004 | Asami Tanno | Japan | 52.88 | Ipoh | Japan Record |
| 24 May 2001 | Kazue Kakinuma | Japan | 52.95 | Osaka | Japan Record |
| 26 Aug 1999 | Michael Johnson | United States | 43.18 | Seville | World Record |
| 16 Jun 1991 | Susumu Takano | Japan | 44.78 | Tokyo | Japan Record |
| 26 Sept 1988 | Susumu Takano | Japan | 44.90 | Seoul | Japan Record |
| 17 Aug 1988 | Butch Reynolds | United States | 43.29 | Zurich | World Record |
| 1 Oct 1986 | Susumu Takano | Japan | 45.00 | Seoul | Japan Record |
| 7 Jul 1986 | Susumu Takano | Japan | 45.21 | Helsinki | Japan Record |
| 6 Oct 1985 | Marita Koch | East Germany | 47.60 | Canberra | World Record |
| 30 Aug 1985 | Susumu Takano | Japan | 45.30 | Kobe | Japan Record |
| 14 Sept 1984 | Susumu Takano | Japan | 45.69 | Tokyo | Japan Record |
| 25 Jul 1984 | Susumu Takano | Japan | 45.85 | Walnut | Japan Record |
| 10 Aug 1983 | Jarmila Kratochvilova | Czechoslovakia | 47.99 | Helsinki | World Record |
| 6 Jul 1983 | Susumu Takano | Japan | 45.86 | Edmonton | Japan Record |
| 8 May 1983 | Susumu Takano | Japan | 46.23 | Tokyo | Japan Record |
| 8 Sept 1982 | Marita Koch | East Germany | 48.16 | Athens | World Record |
| 23 May 1982 | Junko Yoshida | Japan | 54.06 | Tokyo | Japan Record |
| 3 May 1982 | Susumu Takano | Japan | 46.51 | Tokyo | Japan Record |
| 5 Jun 1981 | Junko Yoshida | Japan | 54.89 | Tokyo | Japan Record |
| 9 Sept 1979 | Eiji Natori | Japan | 46.64 | Mexico City | Japan Record |
| 4 Aug 1979 | Marita Koch | East Germany | 48.60 | Turin | World Record |
| 29 Jul 1979 | Marita Koch | East Germany | 48.89 | Potsdam | World Record |
| 31 Aug 1978 | Marita Koch | East Germany | 48.94 | Prague | World Record |
| 19 Aug 1978 | Marita Koch | East Germany | 49.03 | Potsdam | World Record |
| 2 Jul 1978 | Marita Koch | East Germany | 49.19 | Leipzig | World Record |
| 4 Dec 1977 | Yasuhiro Harada | Japan | 46.70 | Canberra | Japan Record |
| 29 Jul 1976 | Irena Szewinska | Poland | 49.29 | Montreal | World Record |
| 18 Oct 1968 | Lee Evans | United States | 43.86 | Mexico City | World Record |