| Event | Heat | Status | |
|---|---|---|---|
| Women 400 M Xfinity Open (Prelims) | 1| | ||
| 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 | Britton WILSON Arkansas |
50.08 Q | 0.193 | |
| 2 | 2 | Lynna IRBY-JACKSON adidas |
50.80 Q | 0.171 | |
| 3 | 6 | Ziyah HOLMAN Michigan |
51.38 Q | 0.257 | |
| 4 | 7 | Shae ANDERSON Unattached |
51.78 SB | 0.220 | |
| 5 | 8 | Kiah WILLIAMS U C F |
51.89 | 0.192 | |
| 6 | 3 | Taiya SHELBY Vanderbilt |
52.64 | 0.213 | |
| 7 | 4 | Brittany AVENI Unattached |
53.88 | 0.281 |