Federation · USA
United States national best marks
Best marks by United States athletes in each event, compiled from the all-time lists we import. Derived national bests — not official national records (see note below).
500
Stored marks
122
Distinct marks shown
Women's 400m
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | Sydney McLaughlin-Levrone | 47.78 | 18 Sep 2025 | — | 26 |
| 2 | Sydney McLaughlin-Levrone | 48.29 | 15 Sep 2025 | — | 26 |
| 2= | Sydney McLaughlin-Levrone | 48.29 | 16 Sep 2025 | — | 26 |
| 4 | Sanya Richards-Ross | 48.70 | 16 Sep 2006 | — | 21 |
| 5 | Sydney McLaughlin-Levrone | 48.74 | 8 Jul 2023 | — | 23 |
| 6 | Sydney McLaughlin-Levrone | 48.75 | 9 Jun 2024 | — | 24 |
| 7 | Valerie Brisco-Hooks | 48.83 | 6 Aug 1984 | — | 24 |
| 7= | Valerie Brisco | 48.83 | 6 Aug 1984 | — | — |
| 7= | Sanya Richards-Ross | 48.83 | 4 Sep 2009 | — | 24 |
| 10 | Aaliyah Butler | 48.84 | 10 Jul 2026 | — | 22 |
| 10= | Aailyah Butler | 48.84 | 10 Jul 2026 | — | — |
| 12 | Sydney McLaughlin-Levrone | 48.90 | 2 Aug 2025 | — | 25 |
| 13 | Sanya Richards-Ross | 48.92 | 19 Aug 2005 | — | 20 |
| 14 | Sanya Richards-Ross | 48.94 | 28 Aug 2009 | — | 24 |
| 15 | Madison Whyte | 48.97 | 13 Jun 2026 | — | 21 |
| 16 | Sanya Richards-Ross | 49.00 | 18 Aug 2009 | — | 24 |
| 17 | Chandra Cheeseborough | 49.05 | 6 Aug 1984 | — | 25 |
| 17= | Sanya Richards-Ross | 49.05 | 28 Jul 2006 | — | 21 |
| 19 | Aailyah Butler | 49.09 | 11 Jul 2025 | — | — |
| 20 | Sydney McLaughlin-Levrone | 49.11 | 13 Sep 2024 | — | 25 |
| 21 | Britton Wilson | 49.13 | 13 May 2023 | — | 22 |
| 21= | Kaylyn Brown | 49.13 | 8 Jun 2024 | — | 19 |
| 23 | Gabby Thomas | 49.14 | 5 Apr 2025 | — | 28 |
| 24 | Sanya Richards-Ross | 49.23 | 3 Jul 2009 | — | 24 |
| 25 | Sanya Richards-Ross | 49.25 | 10 Sep 2006 | — | 21 |
| 26 | Allyson Felix | 49.26 | 27 Aug 2015 | — | 29 |
| 26= | Aailyah Butler | 49.26 | 14 Jun 2025 | — | — |
| 28 | Sanya Richards-Ross | 49.27 | 24 Jun 2006 | — | 21 |
| 28= | Sanya Richards-Ross | 49.27 | 16 Sep 2007 | — | 22 |
| 28= | Sanya Richards-Ross | 49.27 | 23 Sep 2007 | — | 22 |
| 31 | Chandra Cheeseborough | 49.28 | 19 Jun 1984 | — | 25 |
| 31= | Sanya Richards-Ross | 49.28 | 25 Jun 2005 | — | 20 |
| 33 | Sanya Richards-Ross | 49.29 | 14 Sep 2007 | — | 22 |
| 34 | Sanya Richards-Ross | 49.31 | 14 Jul 2006 | — | 21 |
| 35 | Sanya Richards-Ross | 49.34 | 17 Jul 2009 | — | 24 |
| 36 | Sanya Richards-Ross | 49.36 | 7 Sep 2007 | — | 22 |
| 36= | Britton Wilson | 49.36 | 8 Jun 2023 | — | 22 |
| 38 | Sanya Richards-Ross | 49.39 | 2 Jun 2012 | — | 27 |
| 39 | Jearl Miles-Clark | 49.40 | 14 Jun 1997 | — | — |
| 39= | Britton Wilson | 49.40 | 11 May 2023 | — | 22 |
| 41 | Sydney McLaughlin-Levrone | 49.41 | 14 Sep 2025 | — | 26 |
| 42 | Sydney McLaughlin-Levrone | 49.43 | 5 Jul 2025 | — | 25 |
| 43 | Aailyah Butler | 49.44 | 19 Apr 2025 | — | — |
| 44 | Sanya Richards-Ross | 49.46 | 10 Jul 2009 | — | 24 |
| 44= | Allyson Felix | 49.46 | 6 Aug 2021 | — | 35 |
| 44= | Kendall Ellis | 49.46 | 23 Jun 2024 | — | — |
| 47 | Kaylyn Brown | 49.47 | 11 May 2024 | — | 19 |
| 48 | Francena McCorory | 49.48 | 28 Jun 2014 | — | — |
| 49 | Allyson Felix | 49.51 | 15 Aug 2016 | — | 30 |
| 49= | Britton Wilson | 49.51 | 15 Apr 2023 | — | 22 |
| 49= | Britton Wilson | 49.51 | 27 May 2023 | — | 22 |
| 49= | Sydney McLaughlin-Levrone | 49.51 | 24 Jun 2023 | — | 23 |
| 53 | Sanya Richards-Ross | 49.52 | 10 Sep 2005 | — | 20 |
| 53= | Sanya Richards-Ross | 49.52 | 6 Jul 2007 | — | 22 |
| 53= | Shakima Wimbley | 49.52 | 23 Jun 2018 | — | — |
| 56 | Kaylyn Brown | 49.54 | 16 May 2026 | — | 21 |
| 57 | Jearl Miles-Clark | 49.55 | 29 Jul 1996 | — | — |
| 57= | Sanya Richards-Ross | 49.55 | 5 Aug 2012 | — | 27 |
| 59 | Valerie Brisco | 49.56 | 23 Aug 1985 | — | — |
| 59= | Monique Hennagan | 49.56 | 17 Jul 2004 | — | — |
| 61 | Sanya Richards-Ross | 49.57 | 14 Jun 2009 | — | 24 |
| 61= | Athing Mu-Nikolayev | 49.57 | 12 Jun 2021 | — | — |
| 63 | Isabella Whittaker | 49.58 | 12 Jun 2025 | — | — |
| 64 | Marion Jones | 49.59 | 16 Apr 2000 | — | 24 |
| 64= | Allyson Felix | 49.59 | 29 Aug 2011 | — | 25 |
| 64= | Sydney McLaughlin-Levrone | 49.59 | 1 Aug 2025 | — | 25 |
| 64= | Isabella Whittaker | 49.59 | 2 Aug 2025 | — | — |
| 68 | Wadeline Venlogh | 49.60 | 3 Oct 2019 | — | — |
| 68= | Sydney McLaughlin-Levrone | 49.60 | 7 Jul 2023 | — | 23 |
| 70 | Phyllis Francis | 49.61 | 3 Oct 2019 | — | — |
| 71 | Gwen Torrence | 49.64 | 15 Jul 1992 | — | 27 |
| 71= | Dee Dee Trotter | 49.64 | 23 Jun 2007 | — | — |
| 71= | Debbie Dunn | 49.64 | 26 Jun 2010 | — | — |
| 71= | Britton Wilson | 49.64 | 10 Jun 2023 | — | 22 |
| 71= | Madison Whyte | 49.64 | 18 Apr 2026 | — | 21 |
| 71= | Sanaria Butler | 49.64 | 18 Apr 2026 | — | — |
| 77 | Allyson Felix | 49.65 | 9 Jul 2017 | — | 31 |
| 78 | Lillie Leatherwood | 49.66 | 15 Jun 1991 | — | — |
| 78= | Sanya Richards-Ross | 49.66 | 6 Aug 2011 | — | 26 |
| 78= | Sanya Richards-Ross | 49.66 | 28 Jun 2014 | — | 29 |
| 81 | Monique Hennagan | 49.67 | 12 Sep 2004 | — | — |
| 81= | Allyson Felix | 49.67 | 15 Aug 2016 | — | 30 |
| 83 | Allyson Felix | 49.68 | 3 Jul 2016 | — | 30 |
| 83= | Athing Mu-Nikolayev | 49.68 | 29 May 2021 | — | — |
| 83= | Gabby Thomas | 49.68 | 29 Apr 2023 | — | 26 |
| 83= | Shamier Little | 49.68 | 21 Jul 2023 | — | 28 |
| 87 | Sydney McLaughlin-Levrone | 49.69 | 3 May 2025 | — | 25 |
| 88 | Allyson Felix | 49.70 | 7 Aug 2007 | — | 21 |
| 89 | Courtney Okolo | 49.71 | 23 Apr 2016 | — | — |
| 89= | Sydney McLaughlin-Levrone | 49.71 | 9 Jun 2023 | — | 23 |
| 89= | Kaylyn Brown | 49.71 | 22 Jun 2024 | — | 19 |
| 89= | Aailyah Butler | 49.71 | 23 Jun 2024 | — | — |
| 93 | Sanya Richards-Ross | 49.72 | 7 Aug 2007 | — | 22 |
| 93= | Dee Dee Trotter | 49.72 | 5 Aug 2012 | — | — |
| 93= | Quanera Hayes | 49.72 | 24 Jun 2017 | — | — |
| 93= | Rosaline Effiong | 49.72 | 8 Jun 2024 | — | — |
| 97 | Sanya Richards-Ross | 49.73 | 8 Jul 2006 | — | 21 |
| 98 | Sanya Richards-Ross | 49.74 | 10 Aug 2005 | — | 20 |
| 98= | Sanya Richards-Ross | 49.74 | 29 Aug 2008 | — | 23 |
| 100 | Sanya Richards-Ross | 49.77 | 21 Aug 2005 | — | 20 |
| 100= | Sanya Richards-Ross | 49.77 | 13 Jul 2007 | — | 22 |
| 100= | Alexis Holmes | 49.77 | 9 Aug 2024 | — | — |
| 100= | Kaylyn Brown | 49.77 | 30 May 2026 | — | 21 |
| 104 | Chandra Cheeseborough | 49.78 | 24 Aug 1984 | — | 25 |
| 104= | Quanera Hayes | 49.78 | 20 Jun 2021 | — | — |
| 104= | Alexis Holmes | 49.78 | 23 Jun 2024 | — | — |
| 104= | Isabella Whittaker | 49.78 | 15 Jun 2025 | — | — |
| 104= | Aailyah Butler | 49.78 | 15 Jun 2026 | — | — |
| 109 | Valerie Brisco | 49.79 | 19 Jun 1984 | — | — |
| 109= | Sanya Richards-Ross | 49.79 | 3 Aug 2007 | — | 22 |
| 109= | Sydney McLaughlin-Levrone | 49.79 | 6 Jul 2023 | — | 23 |
| 109= | Britton Wilson | 49.79 | 8 Jul 2023 | — | 22 |
| 109= | Aailyah Butler | 49.79 | 11 May 2024 | — | — |
| 114 | Dee Dee Trotter | 49.80 | 23 Sep 2006 | — | — |
| 114= | Lynna Irby-Jackson | 49.80 | 9 Jun 2018 | — | — |
| 116 | Sanya Richards-Ross | 49.81 | 3 Sep 2006 | — | 21 |
| 116= | Debbie Dunn | 49.81 | 8 Jul 2010 | — | — |
| 116= | Allyson Felix | 49.81 | 26 May 2011 | — | 25 |
| 116= | Quanera Hayes | 49.81 | 4 Aug 2021 | — | — |
| 116= | Kendall Ellis | 49.81 | 22 Jun 2024 | — | — |
| 121 | Jearl Miles-Clark | 49.82 | 17 Aug 1993 | — | — |
| 121= | Sanya Richards-Ross | 49.82 | 8 Jul 2005 | — | 20 |
| 121= | Sanya Richards-Ross | 49.82 | 2 Jun 2006 | — | 21 |
| 121= | Kaylyn Brown | 49.82 | 6 Jun 2024 | — | 19 |
| 121= | Lynna Irby-Jackson | 49.82 | 24 Jun 2025 | — | — |
| 121= | Aailyah Butler | 49.82 | 11 Sep 2026 | — | — |
| 127 | Valerie Brisco | 49.83 | 9 Jun 1984 | — | — |
| 127= | Valerie Brisco | 49.83 | 26 Aug 1984 | — | — |
| 127= | Gwen Torrence | 49.83 | 7 Aug 1993 | — | 28 |
| 127= | Allyson Felix | 49.83 | 9 May 2008 | — | 22 |
| 127= | Allyson Felix | 49.83 | 28 Aug 2009 | — | 23 |
| 127= | Francena McCorory | 49.83 | 17 Jul 2015 | — | — |
| 127= | Talitha Diggs | 49.83 | 8 Jul 2023 | — | — |
| 127= | Aailyah Butler | 49.83 | 4 Jun 2026 | — | — |
| 135 | Diane Dixon | 49.84 | 25 Sep 1988 | — | — |
| 135= | Natasha Hastings | 49.84 | 23 Jun 2007 | — | — |
| 135= | Athing Mu-Nikolayev | 49.84 | 15 May 2021 | — | — |
| 138 | Francena McCorory | 49.85 | 26 Jun 2015 | — | — |
| 139 | Sanya Richards-Ross | 49.86 | 13 Jul 2008 | — | 23 |
| 139= | Sanya Richards-Ross | 49.86 | 7 Jun 2009 | — | 24 |
| 139= | Francena McCorory | 49.86 | 11 Aug 2013 | — | — |
| 139= | Francena McCorory | 49.86 | 13 Jun 2015 | — | — |
| 139= | Kaylyn Brown | 49.86 | 10 May 2024 | — | 19 |
| 139= | Aailyah Butler | 49.86 | 5 Jul 2025 | — | — |
| 145 | Denean Hill | 49.87 | 25 Sep 1988 | — | — |
| 145= | LaTasha Colander | 49.87 | 16 Jul 2000 | — | — |
| 145= | Dee Dee Trotter | 49.87 | 4 Aug 2012 | — | — |
| 145= | Lynna Irby-Jackson | 49.87 | 20 Jun 2025 | — | — |
| 149 | Monique Hennagan | 49.88 | 22 Aug 2004 | — | — |
| 149= | Dee Dee Trotter | 49.88 | 25 Jun 2005 | — | — |
| 149= | Quanera Hayes | 49.88 | 9 Sep 2021 | — | — |
| 152 | Sanya Richards-Ross | 49.89 | 17 Jul 2004 | — | 19 |
| 152= | Sanya Richards-Ross | 49.89 | 6 May 2006 | — | 21 |
| 152= | Sanya Richards-Ross | 49.89 | 3 Jul 2008 | — | 23 |
| 152= | Sanya Richards-Ross | 49.89 | 17 Aug 2012 | — | 27 |
| 152= | Allyson Felix | 49.89 | 25 Aug 2015 | — | 29 |
| 152= | Allyson Felix | 49.89 | 4 Aug 2021 | — | 35 |
| 158 | Valerie Brisco | 49.90 | 25 Sep 1988 | — | — |
| 158= | Jearl Miles-Clark | 49.90 | 4 Aug 1997 | — | — |
| 158= | Jearl Miles-Clark | 49.90 | 16 Aug 1997 | — | — |
| 158= | Sanya Richards-Ross | 49.90 | 17 Aug 2008 | — | 23 |
| 158= | Natasha Hastings | 49.90 | 15 Aug 2016 | — | — |
| 158= | Aailyah Butler | 49.90 | 14 Jun 2026 | — | — |
| 164 | Quanera Hayes | 49.91 | 16 Apr 2016 | — | — |
| 164= | Shamier Little | 49.91 | 10 Apr 2021 | — | 26 |
| 164= | Aailyah Butler | 49.91 | 2 Aug 2025 | — | — |
| 167 | Phyllis Francis | 49.92 | 9 Aug 2017 | — | — |
| 167= | Quanera Hayes | 49.92 | 10 Apr 2021 | — | — |
| 169 | Sanya Richards-Ross | 49.93 | 19 Aug 2008 | — | 23 |
| 169= | Francena McCorory | 49.93 | 11 Jul 2014 | — | — |
| 169= | Aailyah Butler | 49.93 | 25 Jul 2026 | — | — |
| 172 | Natasha Hastings | 49.94 | 22 Jun 2013 | — | — |
| 172= | Natasha Hastings | 49.94 | 11 Aug 2013 | — | — |
| 172= | Francena McCorory | 49.94 | 13 Sep 2014 | — | — |
| 172= | Phyllis Francis | 49.94 | 3 Jul 2016 | — | — |
| 176 | Lillie Leatherwood | 49.95 | 27 Jun 1987 | — | — |
| 176= | Sanya Richards-Ross | 49.95 | 5 Jul 2005 | — | 20 |
| 176= | Debbie Dunn | 49.95 | 16 Aug 2009 | — | — |
| 176= | Sanya Richards-Ross | 49.95 | 13 Sep 2009 | — | 24 |
| 176= | Sanya Richards-Ross | 49.95 | 9 May 2015 | — | 30 |
| 176= | Kaylyn Brown | 49.95 | 13 Apr 2024 | — | 19 |
| 182 | Jearl Miles-Clark | 49.96 | 12 Jul 1996 | — | — |
| 182= | Sanya Richards-Ross | 49.96 | 7 May 2005 | — | 20 |
| 182= | Monique Henderson | 49.96 | 25 Jun 2005 | — | — |
| 182= | Francena McCorory | 49.96 | 19 Jul 2013 | — | — |
| 182= | Phyllis Francis | 49.96 | 24 Jun 2017 | — | — |
| 182= | Kaylyn Brown | 49.96 | 15 May 2026 | — | 21 |
| 188 | Monique Hennagan | 49.97 | 24 Aug 2004 | — | — |
| 188= | Aailyah Butler | 49.97 | 3 Jul 2026 | — | — |
| 190 | Jearl Miles-Clark | 49.98 | 4 Aug 1999 | — | — |
| 190= | Sanya Richards-Ross | 49.98 | 4 Jun 2005 | — | 20 |
| 190= | Sanya Richards-Ross | 49.98 | 5 Sep 2014 | — | 29 |
| 190= | Kaylyn Brown | 49.98 | 25 May 2024 | — | 19 |
| 190= | Aailyah Butler | 49.98 | 5 Sep 2026 | — | — |
| 195 | Pam Marshall | 49.99 | 17 May 1986 | — | — |
| 195= | Kendall Ellis | 49.99 | 13 May 2018 | — | — |
| 195= | Talitha Diggs | 49.99 | 11 Jun 2022 | — | — |
| 195= | Alexis Holmes | 49.99 | 26 Sep 2024 | — | — |
| 195= | Isabella Whittaker | 49.99 | 28 Aug 2025 | — | — |
| 200 | Valerie Brisco | 50.00 | 25 Jul 1987 | — | — |
| 200= | Jearl Miles-Clark | 50.00 | 8 Aug 1995 | — | — |
| 200= | Dee Dee Trotter | 50.00 | 24 Aug 2004 | — | — |
| 200= | Sanya Richards-Ross | 50.00 | 22 May 2005 | — | 20 |
| 200= | Kendall Ellis | 50.00 | 24 Jun 2017 | — | — |
| 205 | Valerie Brisco | 50.01 | 21 Aug 1987 | — | — |
| 205= | Francena McCorory | 50.01 | 22 Jun 2013 | — | — |
| 205= | Aailyah Butler | 50.01 | 22 Jun 2024 | — | — |
| 205= | Alexis Holmes | 50.01 | 25 Aug 2024 | — | — |
| 209 | Sanya Richards-Ross | 50.02 | 25 Aug 2006 | — | 21 |
| 209= | Sanya Richards-Ross | 50.02 | 22 Jun 2007 | — | 22 |
| 209= | Allyson Felix | 50.02 | 20 Jun 2021 | — | 35 |
| 209= | Alexis Holmes | 50.02 | 7 Jul 2024 | — | — |
| 213 | Dee Dee Trotter | 50.03 | 19 Sep 2005 | — | — |
| 213= | Courtney Okolo | 50.03 | 18 May 2014 | — | — |
| 213= | Sanya Richards-Ross | 50.03 | 27 Jun 2014 | — | 29 |
| 213= | Wadeline Venlogh | 50.03 | 20 Jun 2021 | — | — |
| 213= | Madison Whyte | 50.03 | 30 May 2026 | — | 21 |
| 218 | Jearl Miles-Clark | 50.04 | 10 Aug 1996 | — | — |
| 218= | Jearl Miles-Clark | 50.04 | 18 Aug 2000 | — | — |
| 218= | Sanya Richards-Ross | 50.04 | 31 May 2008 | — | 23 |
| 218= | Quanera Hayes | 50.04 | 8 Apr 2017 | — | — |
| 218= | Athing Mu-Nikolayev | 50.04 | 14 May 2021 | — | — |
| 223 | Maicel Malone | 50.05 | 6 Jul 1994 | — | — |
| 223= | Jearl Miles-Clark | 50.05 | 3 Aug 1997 | — | — |
| 223= | Sanya Richards-Ross | 50.05 | 8 Aug 2005 | — | 20 |
| 223= | Sanya Richards-Ross | 50.05 | 27 Jun 2009 | — | 24 |
| 223= | Francena McCorory | 50.05 | 6 Jun 2013 | — | — |
| 223= | Francena McCorory | 50.05 | 27 Jun 2014 | — | — |
| 223= | Allyson Felix | 50.05 | 30 May 2015 | — | 29 |
| 223= | Britton Wilson | 50.05 | 14 May 2022 | — | 21 |
| 223= | Aailyah Butler | 50.05 | 13 Apr 2024 | — | — |
| 232 | Rochelle Stevens | 50.06 | 22 Jun 1992 | — | — |
| 232= | Gwen Torrence | 50.06 | 28 Aug 1992 | — | 27 |
| 232= | Monique Hennagan | 50.06 | 3 Sep 2004 | — | — |
| 232= | Francena McCorory | 50.06 | 9 Jun 2012 | — | — |
| 232= | Natasha Hastings | 50.06 | 27 Aug 2016 | — | — |
| 232= | Lynna Irby-Jackson | 50.06 | 2 Aug 2025 | — | — |
| 232= | Madison Whyte | 50.06 | 4 Apr 2026 | — | 21 |
| 239 | Sanya Richards-Ross | 50.07 | 4 Aug 2012 | — | 27 |
| 239= | Sydney McLaughlin-Levrone | 50.07 | 30 Mar 2018 | — | 18 |
| 239= | Phyllis Francis | 50.07 | 10 Jun 2018 | — | — |
| 239= | Wadeline Venlogh | 50.07 | 1 Oct 2019 | — | — |
| 239= | Quanera Hayes | 50.07 | 19 Jun 2021 | — | — |
| 239= | Kaylyn Brown | 50.07 | 23 Jun 2024 | — | 19 |
| 239= | Isabella Whittaker | 50.07 | 1 Aug 2025 | — | — |
| 246 | Allyson Felix | 50.08 | 9 Aug 2017 | — | 31 |
| 246= | Jessica Beard | 50.08 | 23 Jun 2018 | — | — |
| 246= | Talitha Diggs | 50.08 | 9 Jun 2022 | — | — |
| 246= | Britton Wilson | 50.08 | 6 Jul 2023 | — | 22 |
| 246= | Rachel Joseph | 50.08 | 16 May 2026 | — | — |
| 251 | Kaylyn Brown | 50.09 | 2 May 2026 | — | 21 |
| 252 | Monique Henderson | 50.10 | 11 Jun 2005 | — | — |
| 252= | Sanya Richards-Ross | 50.10 | 8 Jun 2008 | — | 23 |
| 252= | Sanya Richards-Ross | 50.10 | 5 Jul 2014 | — | 29 |
| 252= | Kendall Ellis | 50.10 | 20 Jun 2021 | — | — |
| 252= | Aailyah Butler | 50.10 | 18 Apr 2026 | — | — |
| 257 | Rochelle Stevens | 50.11 | 5 Aug 1992 | — | — |
| 257= | Jearl Miles-Clark | 50.11 | 6 Jul 1994 | — | — |
| 257= | Maicel Malone | 50.11 | 10 Aug 1996 | — | — |
| 257= | Jearl Miles-Clark | 50.11 | 14 Jul 1998 | — | — |
| 257= | Michelle Collins | 50.11 | 13 May 2000 | — | — |
| 257= | Sanya Richards-Ross | 50.11 | 21 Aug 2004 | — | 19 |
| 257= | Sanya Richards-Ross | 50.11 | 5 May 2012 | — | 27 |
| 257= | Lynna Irby-Jackson | 50.11 | 7 Jun 2018 | — | — |
| 257= | Lynna Irby-Jackson | 50.11 | 8 Jul 2023 | — | — |
| 257= | Rosaline Effiong | 50.11 | 25 May 2024 | — | — |
| 267 | Allyson Felix | 50.12 | 7 Aug 2017 | — | 31 |
| 267= | Alexis Holmes | 50.12 | 5 Apr 2025 | — | — |
| 267= | Aailyah Butler | 50.12 | 12 Sep 2026 | — | — |
| 270 | Francena McCorory | 50.13 | 27 Jul 2013 | — | — |
| 270= | Francena McCorory | 50.13 | 25 Apr 2015 | — | — |
| 270= | Shamier Little | 50.13 | 21 Jun 2024 | — | 29 |
| 273 | Diane Dixon | 50.14 | 21 Aug 1988 | — | — |
| 273= | Lillie Leatherwood | 50.14 | 21 Jun 1991 | — | — |
| 273= | Dee Dee Trotter | 50.14 | 22 Aug 2004 | — | — |
| 273= | Monique Henderson | 50.14 | 14 Jul 2006 | — | — |
| 273= | Natasha Hastings | 50.14 | 24 Jun 2017 | — | — |
| 273= | Aailyah Butler | 50.14 | 19 Jul 2024 | — | — |
| 279 | Maicel Malone | 50.15 | 17 Jun 1996 | — | — |
| 279= | Michelle Collins | 50.15 | 5 Aug 2000 | — | — |
| 279= | Natasha Hastings | 50.15 | 9 Jun 2007 | — | — |
| 279= | Allyson Felix | 50.15 | 14 May 2010 | — | 24 |
| 279= | Francena McCorory | 50.15 | 14 Jun 2014 | — | — |
| 279= | Britton Wilson | 50.15 | 25 May 2023 | — | 22 |
| 285 | Valerie Brisco | 50.16 | 26 Sep 1988 | — | — |
| 285= | Jearl Miles-Clark | 50.16 | 6 Sep 1997 | — | — |
| 285= | Shamier Little | 50.16 | 22 Jun 2024 | — | 29 |
| 285= | Isabella Whittaker | 50.16 | 31 May 2025 | — | — |
| 285= | Aailyah Butler | 50.16 | 12 Jun 2025 | — | — |
| 285= | Wadeline Venlogh | 50.16 | 19 Jul 2025 | — | — |
| 291 | Natasha Kaiser-Brown | 50.17 | 17 Aug 1993 | — | — |
| 291= | Allyson Felix | 50.17 | 3 Aug 2007 | — | 21 |
| 291= | Dee Dee Trotter | 50.17 | 29 Aug 2007 | — | — |
| 291= | Natasha Hastings | 50.17 | 3 Jul 2016 | — | — |
| 291= | Rosaline Effiong | 50.17 | 27 May 2023 | — | — |
| 291= | Isabella Whittaker | 50.17 | 8 Jun 2024 | — | — |
| 291= | Lynna Irby-Jackson | 50.17 | 22 Jun 2024 | — | — |
| 298 | Lillie Leatherwood | 50.18 | 11 Jul 1986 | — | — |
| 298= | Sanya Richards-Ross | 50.18 | 18 Aug 2006 | — | 21 |
| 298= | Sanya Richards-Ross | 50.18 | 21 Apr 2012 | — | 27 |
| 298= | Shakima Wimbley | 50.18 | 13 Apr 2018 | — | — |
| 298= | Isabella Whittaker | 50.18 | 20 Jun 2025 | — | — |
| 298= | Alexis Holmes | 50.18 | 16 Aug 2025 | — | — |
| 304 | Lillie Leatherwood | 50.19 | 19 Jun 1984 | — | — |
| 304= | Jearl Miles-Clark | 50.19 | 15 Jun 1991 | — | — |
| 304= | Sanya Richards-Ross | 50.19 | 24 Aug 2004 | — | 19 |
| 304= | Francena McCorory | 50.19 | 4 Aug 2012 | — | — |
| 304= | Allyson Felix | 50.19 | 10 May 2013 | — | 27 |
| 304= | Allyson Felix | 50.19 | 27 Jun 2015 | — | 29 |
| 304= | Kendall Ellis | 50.19 | 9 Jun 2018 | — | — |
| 304= | Shamier Little | 50.19 | 27 Mar 2021 | — | 26 |
| 304= | Alexis Holmes | 50.19 | 22 Jun 2024 | — | — |
| 313 | Gwen Torrence | 50.20 | 8 Jul 1994 | — | 29 |
| 313= | Monique Hennagan | 50.20 | 19 Sep 2004 | — | — |
| 313= | Phyllis Francis | 50.20 | 23 Jun 2017 | — | — |
| 313= | Shakima Wimbley | 50.20 | 26 Jul 2019 | — | — |
| 313= | Isabella Whittaker | 50.20 | 15 Sep 2025 | — | — |
| 318 | Valerie Brisco | 50.21 | 24 Aug 1984 | — | — |
| 318= | Valerie Brisco | 50.21 | 10 Sep 1986 | — | — |
| 318= | Jearl Miles-Clark | 50.21 | 28 Jul 1996 | — | — |
| 318= | Jearl Miles-Clark | 50.21 | 2 Jul 1997 | — | — |
| 318= | Sanya Richards-Ross | 50.21 | 16 Aug 2009 | — | 24 |
| 318= | Debbie Dunn | 50.21 | 4 Sep 2010 | — | — |
| 318= | Sanya Richards-Ross | 50.21 | 30 Aug 2012 | — | 27 |
| 318= | Francena McCorory | 50.21 | 15 May 2015 | — | — |
| 318= | Shakima Wimbley | 50.21 | 27 Jul 2019 | — | — |
| 327 | Rochelle Stevens | 50.22 | 24 Jun 1992 | — | — |
| 327= | Sanya Richards-Ross | 50.22 | 12 Jul 2004 | — | 19 |
| 327= | Dee Dee Trotter | 50.22 | 3 Sep 2004 | — | — |
| 327= | Phyllis Francis | 50.22 | 1 Oct 2019 | — | — |
| 327= | Talitha Diggs | 50.22 | 25 Jun 2022 | — | — |
| 327= | Sanaria Butler | 50.22 | 16 May 2026 | — | — |
| 333 | Jearl Miles-Clark | 50.23 | 16 Jul 2000 | — | — |
| 333= | Dee Dee Trotter | 50.23 | 6 Aug 2004 | — | — |
| 333= | Natasha Hastings | 50.23 | 26 May 2007 | — | — |
| 333= | Courtney Okolo | 50.23 | 13 Jun 2014 | — | — |
| 333= | Francena McCorory | 50.23 | 28 May 2016 | — | — |
| 333= | Lynna Irby-Jackson | 50.23 | 7 Jun 2025 | — | — |
| 339 | Diane Dixon | 50.24 | 5 Jul 1986 | — | — |
| 339= | Maicel Malone | 50.24 | 17 Jun 1994 | — | — |
| 339= | Monique Hennagan | 50.24 | 19 Aug 2005 | — | — |
| 339= | Mary Wineberg | 50.24 | 23 Jun 2007 | — | — |
| 339= | Francena McCorory | 50.24 | 28 Aug 2011 | — | — |
| 339= | Natasha Hastings | 50.24 | 25 May 2013 | — | — |
| 339= | Francena McCorory | 50.24 | 3 May 2014 | — | — |
| 339= | Natasha Hastings | 50.24 | 24 Jul 2015 | — | — |
| 339= | Kendall Ellis | 50.24 | 23 Jun 2017 | — | — |
| 339= | Wadeline Venlogh | 50.24 | 19 Jun 2021 | — | — |
| 349 | Lillie Leatherwood | 50.25 | 6 Aug 1984 | — | — |
| 349= | Allyson Felix | 50.25 | 11 Jul 2008 | — | 22 |
| 349= | Natasha Hastings | 50.25 | 27 Jun 2015 | — | — |
| 349= | Taylor Ellis-Watson | 50.25 | 3 Jul 2016 | — | — |
| 349= | Britton Wilson | 50.25 | 1 Aug 2025 | — | 24 |
| 349= | JaMeesia Ford | 50.25 | 15 May 2026 | — | — |
| 349= | Rachel Joseph | 50.25 | 28 May 2026 | — | — |
| 349= | Kaylyn Brown | 50.25 | 13 Jun 2026 | — | 21 |
| 357 | Sanya Richards-Ross | 50.26 | 15 Jun 2007 | — | 22 |
| 357= | Rosaline Effiong | 50.26 | 23 May 2024 | — | — |
| 359 | Jearl Miles-Clark | 50.27 | 20 Sep 2002 | — | — |
| 359= | Mary Wineberg | 50.27 | 27 Aug 2007 | — | — |
| 359= | Sanya Richards-Ross | 50.27 | 30 Sep 2007 | — | 22 |
| 359= | Allyson Felix | 50.27 | 3 Jul 2010 | — | 24 |
| 359= | Francena McCorory | 50.27 | 6 Jul 2012 | — | — |
| 359= | Sanya Richards-Ross | 50.27 | 21 Aug 2014 | — | 29 |
| 365 | Lillie Leatherwood | 50.28 | 23 Jun 1991 | — | — |
| 365= | Dee Dee Trotter | 50.28 | 17 Jul 2004 | — | — |
| 365= | Ashley Spencer | 50.28 | 7 Jun 2013 | — | — |
| 365= | Natasha Hastings | 50.28 | 26 Jun 2015 | — | — |
| 365= | Francena McCorory | 50.28 | 2 Jul 2016 | — | — |
| 365= | Lynna Irby-Jackson | 50.28 | 24 Apr 2021 | — | — |
| 365= | Aailyah Butler | 50.28 | 23 Aug 2026 | — | — |
| 372 | Diane Dixon | 50.29 | 23 Aug 1985 | — | — |
| 372= | Lillie Leatherwood | 50.29 | 13 Aug 1986 | — | — |
| 372= | Valerie Brisco | 50.29 | 5 Sep 1986 | — | — |
| 372= | Michelle Collins | 50.29 | 16 Jul 2000 | — | — |
| 372= | Francena McCorory | 50.29 | 22 Jul 2011 | — | — |
| 372= | Sanya Richards-Ross | 50.29 | 30 May 2015 | — | 30 |
| 372= | Courtney Okolo | 50.29 | 9 Jul 2017 | — | — |
| 372= | Kaylin Whitney | 50.29 | 20 Jun 2021 | — | — |
| 372= | Gabby Thomas | 50.29 | 24 Jun 2023 | — | 26 |
| 381 | Diane Dixon | 50.30 | 15 Jun 1991 | — | — |
| 381= | Jearl Miles-Clark | 50.30 | 24 Jun 1992 | — | — |
| 381= | Natasha Hastings | 50.30 | 12 Aug 2013 | — | — |
| 381= | Francena McCorory | 50.30 | 13 Sep 2015 | — | — |
| 381= | Kendall Ellis | 50.30 | 14 May 2021 | — | — |
| 381= | Aailyah Butler | 50.30 | 25 May 2024 | — | — |
| 381= | Kaylyn Brown | 50.30 | 18 Apr 2026 | — | 21 |
| 388 | Valerie Brisco | 50.31 | 15 Aug 1986 | — | — |
| 388= | Gwen Torrence | 50.31 | 10 Jul 1992 | — | 27 |
| 388= | Jearl Miles-Clark | 50.31 | 7 Sep 1996 | — | — |
| 388= | Monique Hennagan | 50.31 | 12 Jul 2004 | — | — |
| 388= | Dee Dee Trotter | 50.31 | 27 Aug 2007 | — | — |
| 388= | Allyson Felix | 50.31 | 2 Jul 2016 | — | 30 |
| 388= | Phyllis Francis | 50.31 | 15 Aug 2016 | — | — |
| 388= | Jan´Taijah Jones | 50.31 | 8 Jun 2023 | — | — |
| 388= | Alexis Holmes | 50.31 | 11 May 2024 | — | — |
| 388= | Sydney Segalla | 50.31 | 10 Jun 2026 | — | — |
| 398 | Chandra Cheeseborough | 50.32 | 5 Aug 1984 | — | 25 |
| 398= | Dee Dee Trotter | 50.32 | 12 Jun 2004 | — | — |
| 398= | Mary Wineberg | 50.32 | 8 Jun 2008 | — | — |
| 398= | Alexis Holmes | 50.32 | 5 Aug 2023 | — | — |
| 398= | Alexis Holmes | 50.32 | 13 Sep 2024 | — | — |
| 398= | Sydney McLaughlin-Levrone | 50.32 | 6 Apr 2025 | — | 25 |
| 398= | Rachel Joseph | 50.32 | 30 May 2026 | — | — |
| 405 | Maicel Malone | 50.33 | 7 Jul 1991 | — | — |
| 405= | Maicel Malone | 50.33 | 3 Sep 1994 | — | — |
| 405= | Allyson Felix | 50.33 | 6 May 2011 | — | 25 |
| 405= | Francena McCorory | 50.33 | 5 Aug 2012 | — | — |
| 405= | Jermaisha Arnold | 50.33 | 27 May 2023 | — | — |
| 405= | JaMeesia Ford | 50.33 | 22 Jun 2024 | — | — |
| 405= | Alexis Holmes | 50.33 | 2 Aug 2025 | — | — |
| 412 | Sanya Richards-Ross | 50.34 | 15 Jul 2004 | — | 19 |
| 412= | Natasha Hastings | 50.34 | 13 Jul 2007 | — | — |
| 412= | Natasha Hastings | 50.34 | 15 Aug 2016 | — | — |
| 412= | Alexis Holmes | 50.34 | 17 Feb 2024 | — | — |
| 416 | Jearl Miles-Clark | 50.35 | 28 Jun 1996 | — | — |
| 416= | Sanya Richards-Ross | 50.35 | 22 Jul 2005 | — | 20 |
| 416= | Debbie Dunn | 50.35 | 18 Aug 2009 | — | — |
| 416= | Kaylin Whitney | 50.35 | 19 Jun 2021 | — | — |
| 416= | Lynna Irby-Jackson | 50.35 | 20 Jun 2021 | — | — |
| 416= | Kendall Ellis | 50.35 | 25 Jun 2022 | — | — |
| 416= | Makenzie Dunmore | 50.35 | 22 Apr 2023 | — | — |
| 416= | Talitha Diggs | 50.35 | 8 Jun 2023 | — | — |
| 416= | Alexis Holmes | 50.35 | 5 Aug 2024 | — | — |
| 416= | Kaylyn Brown | 50.35 | 3 May 2025 | — | 20 |
| 426 | Marion Jones | 50.36 | 19 Apr 1998 | — | 22 |
| 426= | Allyson Felix | 50.36 | 28 Aug 2011 | — | 25 |
| 426= | Francena McCorory | 50.36 | 4 Jul 2013 | — | — |
| 426= | Natasha Hastings | 50.36 | 6 Sep 2013 | — | — |
| 426= | Francena McCorory | 50.36 | 4 Jun 2015 | — | — |
| 426= | Courtney Okolo | 50.36 | 11 Jun 2016 | — | — |
| 426= | Shakima Wimbley | 50.36 | 24 Jun 2017 | — | — |
| 426= | Alexis Holmes | 50.36 | 2 May 2025 | — | — |
| 426= | Aailyah Butler | 50.36 | 17 May 2025 | — | — |
| 426= | Alexis Holmes | 50.36 | 3 Jul 2026 | — | — |
| 436 | Rochelle Stevens | 50.37 | 3 Aug 1992 | — | — |
| 436= | Gwen Torrence | 50.37 | 25 Jun 1993 | — | 28 |
| 436= | Jearl Miles-Clark | 50.37 | 3 Sep 1994 | — | — |
| 436= | Michelle Collins | 50.37 | 15 Jul 2000 | — | — |
| 436= | Jearl Miles-Clark | 50.37 | 19 Jul 2002 | — | — |
| 436= | Allyson Felix | 50.37 | 19 Aug 2010 | — | 24 |
| 436= | Francena McCorory | 50.37 | 1 Jun 2013 | — | — |
| 436= | Courtney Okolo | 50.37 | 2 Jul 2016 | — | — |
| 436= | Francena McCorory | 50.37 | 3 Jul 2016 | — | — |
| 436= | Phyllis Francis | 50.37 | 7 Aug 2017 | — | — |
| 436= | Kendall Ellis | 50.37 | 23 Jun 2018 | — | — |
| 436= | Gabby Thomas | 50.37 | 20 Apr 2024 | — | 27 |
| 448 | Diane Dixon | 50.38 | 18 Jul 1988 | — | — |
| 448= | Rochelle Stevens | 50.38 | 17 May 1992 | — | — |
| 448= | Natasha Kaiser-Brown | 50.38 | 6 Jul 1994 | — | — |
| 448= | Moushami Robinson | 50.38 | 25 Jun 2005 | — | — |
| 448= | Sanya Richards-Ross | 50.38 | 22 Jul 2008 | — | 23 |
| 448= | Kendall Ellis | 50.38 | 27 Jul 2019 | — | — |
| 448= | Jessica Beard | 50.38 | 24 Apr 2021 | — | — |
| 448= | Lynna Irby-Jackson | 50.38 | 27 May 2023 | — | — |
| 448= | Isabella Whittaker | 50.38 | 2 May 2025 | — | — |
| 457 | Rochelle Stevens | 50.39 | 19 Aug 1990 | — | — |
| 457= | Maicel Malone | 50.39 | 15 Jun 1991 | — | — |
| 457= | Jearl Miles-Clark | 50.39 | 6 Aug 1995 | — | — |
| 457= | Dee Dee Trotter | 50.39 | 25 Jul 2005 | — | — |
| 457= | Joanna Atkins | 50.39 | 13 Jun 2009 | — | — |
| 457= | Monica Hargrove | 50.39 | 13 Jul 2009 | — | — |
| 457= | Sanya Richards-Ross | 50.39 | 11 Jul 2014 | — | 29 |
| 457= | Courtney Okolo | 50.39 | 3 Jul 2016 | — | — |
| 457= | Jessica Beard | 50.39 | 30 Jun 2018 | — | — |
| 457= | Aailyah Butler | 50.39 | 10 May 2024 | — | — |
| 457= | Kendall Ellis | 50.39 | 12 Jul 2024 | — | — |
| 468 | Sherri Howard | 50.40 | 19 Jun 1984 | — | — |
| 468= | Denean Hill | 50.40 | 18 Jul 1988 | — | — |
| 468= | Dee Dee Trotter | 50.40 | 24 Jun 2006 | — | — |
| 468= | Allyson Felix | 50.40 | 11 May 2007 | — | 21 |
| 468= | Allyson Felix | 50.40 | 25 Jun 2011 | — | 25 |
| 468= | Shakima Wimbley | 50.40 | 14 May 2017 | — | — |
| 468= | Shamier Little | 50.40 | 9 Jul 2017 | — | 22 |
| 468= | Jessica Beard | 50.40 | 5 Jul 2018 | — | — |
| 468= | Lynna Irby-Jackson | 50.40 | 29 Apr 2023 | — | — |
| 468= | Ziyah Holman | 50.40 | 8 Jun 2023 | — | — |
| 468= | Alexis Holmes | 50.40 | 30 May 2024 | — | — |
| 479 | Chandra Cheeseborough | 50.41 | 16 Jun 1984 | — | 25 |
| 479= | Diane Dixon | 50.41 | 21 Jun 1986 | — | — |
| 479= | Diane Dixon | 50.41 | 21 Aug 1987 | — | — |
| 479= | Natasha Kaiser-Brown | 50.41 | 16 Aug 1993 | — | — |
| 479= | Michelle Collins | 50.41 | 28 Jun 2000 | — | — |
| 479= | Mary Wineberg | 50.41 | 18 May 2008 | — | — |
| 479= | Sanya Richards-Ross | 50.41 | 14 Sep 2008 | — | 23 |
| 479= | Francena McCorory | 50.41 | 2 Jun 2012 | — | — |
| 479= | Phyllis Francis | 50.41 | 15 Aug 2016 | — | — |
| 479= | Courtney Okolo | 50.41 | 4 Jul 2017 | — | — |
| 479= | Rosaline Effiong | 50.41 | 8 Jul 2023 | — | — |
| 490 | Lillie Leatherwood | 50.42 | 21 Aug 1987 | — | — |
| 490= | Denean Hill | 50.42 | 5 Jun 1988 | — | — |
| 490= | Natasha Kaiser-Brown | 50.42 | 24 Jun 1992 | — | — |
| 490= | Jearl Miles-Clark | 50.42 | 30 Aug 1996 | — | — |
| 490= | Athing Mu-Nikolayev | 50.42 | 12 May 2022 | — | — |
| 490= | Rosaline Effiong | 50.42 | 6 Jun 2024 | — | — |
| 490= | Alexis Holmes | 50.42 | 1 Aug 2025 | — | — |
| 490= | Bailey Lear | 50.42 | 17 May 2026 | — | — |
| 490= | Alexis Holmes | 50.42 | 6 Jun 2026 | — | — |
| 499 | Lillie Leatherwood | 50.43 | 6 Oct 1985 | — | — |
| 499= | Jearl Miles-Clark | 50.43 | 22 Jun 1992 | — | — |
Every mark in scope within the compiled depth. Equal marks share a rank ("1=" style). An athlete with marks for two nations appears under each nation represented at the time (e.g. Obikwelu under Nigeria and Portugal).
About this derivation
These lists are derived from the marks in our database — including the complete legal all-time lists imported from alltime-athletics.com — grouped by the nation the athlete was representing at each mark. They are not official national records: federations ratify national records under their own eligibility rules, and some marks here may not qualify.