| Event | Heat | Status | |
|---|---|---|---|
| Women 400 M Xfinity Open (Prelims) | 2| | ||
| Thursday 4:56 PM |
| Record | Athlete | Date | ||
|---|---|---|---|---|
| WR | World | Marita Koch - GDR | 47.60 | 10/6/1985 |
| AR | American | Sanya Richards - Nike | 48.70 | 9/17/2006 |
| MR | Meet | Sanya Richards - Nike | 49.27 | 6/24/2006 |
| FR | Facility | Shaunae Miller-Uibo - BAH | 49.08 | 4/24/2021 |
| WQ | World Champ Q | 51.00 |
| Pl | Ln | Athlete | Time | ||
|---|---|---|---|---|---|
| 1 | 5 | Sydney MCLAUGHLIN-LEVRONE New Balance |
49.79 Q | 0.240 | |
| 2 | 8 | Makenzie DUNMORE Tracksmith |
51.07 Q | 0.225 | |
| 3 | 3 | Quanera HAYES Nike |
51.32 Q SB | 0.245 | |
| 4 | 7 | Maya SINGLETARY Charlotte |
51.44 PB | 0.540 | |
| 5 | 4 | Kendall ELLIS New Balance |
51.70 | 0.242 | |
| 6 | 2 | Tierra ROBINSON Texas A&M |
52.01 | 0.222 | |
| 7 | 6 | Shakima WIMBLEY Unattached |
52.96 | 0.230 |