| Event | Heat | Status | |
|---|---|---|---|
| Women 400 M Xfinity Open (Prelims) | 4| | ||
| 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 | 3 | Rosey EFFIONG Arkansas |
51.35 Q | 0.222 | |
| 2 | 8 | Courtney OKOLO Unattached |
51.56 Q SB | 0.293 | |
| 3 | 6 | Paris PEOPLES Arkansas |
51.95 Q | 0.195 | |
| 4 | 1 | Jan'Taijah JONES Usc |
52.09 | 0.306 | |
| 5 | 2 | Bailey LEAR Usc |
52.78 | 0.210 | |
| 6 | 7 | Taylor MANSON Unattached |
52.79 | 0.246 | |
| 7 | 4 | Kaylin WHITNEY Nike Red Bull |
53.18 SB | 0.326 | |
| 8 | 5 | Ava ALEXANDER Maveric AthleticsTrack Club |
57.46 | 0.283 |