300 metres
The 300 metres is an uncommon sprinting event in track and field competitions.
All-time top 25
- + = to 400 m performance
- i = indoor performance
- A = affected by altitude
- OT = oversized track
Men
- Correct as of June 2017.
| Rank | Result | Athlete | Nationality | Date | Place | Ref |
| 1 | 30.81 | Wayde van Niekerk | South Africa | 28 June 2017 | Ostrava | |
| 2 | 30.85 A | Michael Johnson | United States | 24 March 2000 | Pretoria | |
| 3 | 30.97 | Usain Bolt | Jamaica | 27 May 2010 | Ostrava | |
| 4 | 31.20+ | Kirani James | Grenada | 14 August 2016 | Rio de Janeiro | |
| 4 | 31.20+ | LaShawn Merritt | United States | 14 August 2016 | Rio de Janeiro | |
| 6 | 31.44 | Isaac Makwala | Botswana | 28 June 2017 | Ostrava | |
| 7 | 31.48 | Roberto Hernández | Cuba | 3 September 1990 | Jerez de la Frontera | |
| 7 | 31.48 | Danny Everett | United States | 3 September 1990 | Jerez de la Frontera | |
| 9 | 31.56 | Douglas Walker | Great Britain | 19 July 1998 | Gateshead | |
| 10 | 31.58+ | Jeremy Wariner | United States | 31 August 2007 | Osaka | |
| 11 | 31.61 | Anthuan Maybank | United States | 13 July 1996 | Durham | |
| 11 | 31.61 | Clarence Munyai | South Africa | 28 June 2017 | Ostrava | |
| 13 | 31.64 | Tony McQuay | United States | 11 June 2016 | Kingston | |
| 14 | 31.67 | John Regis | Great Britain | 17 July 1992 | Gateshead | |
| 15 | 31.70 | Kirk Baptiste | United States | 18 August 1984 | London | |
| 16 | 31.73 | Thomas Jefferson | United States | 22 August 1987 | London | |
| 17 | 31.74 | Gabriel Tiacoh | Ivory Coast | 6 August 1986 | A Coruña | |
| 18 | 31.77 | Tyler Christopher | Canada | 20 May 2004 | Sainte Anne | |
| 19 | 31.80 | Pavel Maslák | Czech Republic | 28 June 2017 | Ostrava | |
| 20 | 31.81 | Gil Roberts | United States | 11 June 2016 | Kingston | |
| 21 | 31.82 | Steve Lewis | United States | 17 July 1992 | Gateshead | |
| 22 | 31.87 | Mark Richardson | Great Britain | 19 July 1998 | Gateshead | |
| 22 | 31.87 | Jonathan Borlée | Belgium | 5 July 2012 | Naimette-Xhovémont | |
| 22 | 31.87 i | Noah Lyles | United States | 4 March 2017 | Albuquerque | |
| 25 | 31.88+ | Angelo Taylor | United States | 31 August 2007 | Osaka | |
| 25 | 31.88 | Darren Clark | Australia | 30 June 1986 | Belfast | |
| 25 | 31.88 i | Wallace Spearmon | United States | 10 February 2006 | Fayetteville |
Women
- Correct as of June 2019.
| Rank | Result | Athlete | Nationality | Date | Place | Ref |
| 1 | 34.14+ | Marita Koch | German Democratic Republic | 6 October 1985 | Canberra | |
| 2 | 34.41 | Shaunae Miller-Uibo | Bahamas | 20 June 2019 | Ostrava | |
| 3 | 34.95+ | Jarmila Kratochvílová | Czechoslovakia | 18 August 1982 | Zürich | |
| 4 | 35.00+ | Marie-José Pérec | France | 27 August 1991 | Tokyo | |
| 5 | 35.01+ | Olga Bryzgina | Ukraine | 6 October 1985 | Canberra | |
| 6 | 35.24+ | Tatána Kocembová | Czechoslovakia | 10 August 1983 | Helsinki | |
| 7 | 35.30 A | Ana Guevara | Mexico | 3 May 2003 | Mexico City | |
| 8 | 35.45 i | Irina Privalova | Russia | 17 January 1993 | Moscow | |
| 9 | 35.46 | Kathy Cook | Great Britain | 18 August 1984 | London | |
| 9 | 35.46 | Chandra Cheeseborough | United States | 18 August 1984 | London | |
| 11 | 35.47+ | Valerie Brisco-Hooks | United States | 26 September 1988 | Seoul | |
| 12 | 35.48 i | Svetlana Goncharenko | Russia | 4 February 1998 | Tampere | |
| 13 | 35.63+ | Sanya Richards-Ross | United States | 18 August 2009 | Berlin | |
| 14 | 35.69 i | Patricia Hall | Jamaica | 14 February 2012 | Liévin | |
| 15 | 35.70 | Irena Szewinska | Poland | 4 July 1975 | London | |
| 15 | 35.70 | Léa Sprunger | Switzerland | 25 May 2017 | Langenthal | |
| 17 | 35.71 | Donna Fraser | Great Britain | 28 August 2000 | Gateshead | |
| 17 | 35.71 i | Quanera Hayes | United States | 7 January 2017 | Clemson | |
| 19 | 35.73+ | Novlene Williams-Mills | Jamaica | 29 August 2007 | Osaka | |
| 20 | 35.74 | Courtney Okolo | United States | 23 July 2016 | Houston | |
| 21 | 35.78+ | Olga Nazarova | Russia | 26 September 1988 | Seoul | |
| 22 | 35.81 | Silke Knoll | Germany | 19 May 1990 | Olpe | |
| 23 | 35.82 | Cydonie Mothersille | Cayman Islands | 14 September 2000 | Sydney | |
| 24 | 35.83 i | Merlene Ottey | Jamaica | 14 March 1981 | Pocatello | |
| 25 | 35.90+ | Antonina Krivoshapka | Russia | 18 August 2009 | Berlin |