Federation · USA
United States national best marks
Best mark per athlete 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).
100
Stored athletes
37
Distinct marks shown
Men's 400m
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | Michael Johnson | 43.18 | 26 Aug 1999 | — | 31 |
| 2 | Butch Reynolds | 43.29 | 17 Aug 1988 | — | 24 |
| 3 | Quincy Hall | 43.40 | 7 Aug 2024 | — | 26 |
| 4 | Jeremy Wariner | 43.45 | 31 Aug 2007 | — | 23 |
| 4= | Michael Norman | 43.45 | 20 Apr 2019 | — | 21 |
| 6 | Quincy Watts | 43.50 | 5 Aug 1992 | — | 22 |
| 7 | Fred Kerley | 43.64 | 27 Jul 2019 | — | 24 |
| 8 | LaShawn Merritt | 43.65 | 26 Aug 2015 | — | 29 |
| 9 | Champion Allison | 43.70 | 25 Jun 2022 | — | 23 |
| 10 | Jacory Patterson | 43.78 | 4 Sep 2026 | — | 26 |
| 11 | Danny Everett | 43.81 | 26 Jun 1992 | — | 25 |
| 12 | Rai Benjamin | 43.83 | 23 Aug 2026 | — | 29 |
| 13 | Randolph Ross | 43.85 | 11 Jun 2021 | — | — |
| 14 | Lee Evans | 43.86 | 18 Oct 1968 | — | 21 |
| 15 | Steve Lewis | 43.87 | 28 Sep 1988 | — | 19 |
| 16 | Khaleb McRae | 43.91 | 22 Jun 2025 | — | — |
| 17 | Jonathan Simms | 43.92 | 12 Jun 2026 | — | — |
| 18 | Larry James | 43.97 | 18 Oct 1968 | — | — |
| 18= | Christopher Bailey | 43.97 | 4 Sep 2026 | — | — |
| 20 | Justin Braun | 43.99 | 29 May 2026 | — | — |
| 21 | Quincy Wilson | 44.02 | 6 Aug 2026 | — | — |
| 22 | Michael Cherry | 44.03 | 3 Sep 2021 | — | — |
| 23 | Angelo Taylor | 44.05 | 23 Jun 2007 | — | 28 |
| 24 | Alvin Harrison | 44.09 | 19 Jun 1996 | — | — |
| 24= | Jerome Young | 44.09 | 21 Jun 1998 | — | — |
| 26 | Vernon Norwood | 44.10 | 20 Jul 2024 | — | — |
| 27 | Jordan Pierre | 44.12 | 16 May 2026 | — | — |
| 28 | Derek Mills | 44.13 | 4 Jun 1995 | — | — |
| 29 | Anthuan Maybank | 44.15 | 3 Jul 1996 | — | — |
| 29= | Chris Robinson | 44.15 | 19 Apr 2025 | — | — |
| 31 | Otis Harris | 44.16 | 23 Aug 2004 | — | — |
| 32 | Sidi Njie | 44.20 | 12 Jun 2026 | — | — |
| 33 | Gil Roberts | 44.22 | 24 Jun 2017 | — | — |
| 33= | Bryce Deadmon | 44.22 | 8 Jul 2023 | — | — |
| 35 | Kahmari Montgomery | 44.23 | 7 Jun 2019 | — | — |
| 36 | Tony McQuay | 44.24 | 2 Jul 2016 | — | — |
| 37 | Trevor Stewart | 44.25 | 7 Jun 2019 | — | — |
| 37= | Ryan Willie | 44.25 | 9 Jun 2023 | — | — |
| 39 | Alonzo Babers | 44.27 | 8 Aug 1984 | — | — |
| 39= | Antonio Pettigrew | 44.27 | 17 Jun 1989 | — | — |
| 39= | Darold Williamson | 44.27 | 10 Jun 2005 | — | — |
| 42 | Andrew Valmon | 44.28 | 19 Jun 1993 | — | — |
| 42= | Tyree Washington | 44.28 | 12 May 2001 | — | — |
| 44 | Derrick Brew | 44.29 | 16 May 1999 | — | — |
| 44= | Nathan Strother | 44.29 | 27 Jul 2019 | — | — |
| 44= | Jayden Davis | 44.29 | 18 Apr 2026 | — | — |
| 47 | LaMont Smith | 44.30 | 19 Jun 1996 | — | — |
| 47= | Noah Williams | 44.30 | 24 Apr 2021 | — | — |
| 49 | Darnell Hall | 44.34 | 5 Jul 1995 | — | — |
| 49= | Elija Godwin | 44.34 | 25 Jun 2022 | — | — |
One mark per athlete — the athlete's best while representing United States. Equal marks share a rank ("1=" style). Showing the top 50 of 100 stored. 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.