On 28 July 2019, Dalilah Muhammad (United States) ran their 400 metres hurdles in 52.20 seconds at Des Moines (United States Championships).
On 4h/world, this time earns Dalilah a Top 3% World ranking.
| 18.46 |
| 8.33 |
15 R |
R |
| H5 | 4.30(+0.10) | 22.76 | 8.14 | 15 R | R |
| H6 | 4.40(+0.10) | 27.16 | 7.95 | 15 R | R |
| H7 | 4.53(+0.13) | 31.69 | 7.73 | 15 R | R |
| H8 | 4.67(+0.14) | 36.36 | 7.49 | 16 L | L |
| H9 | 4.90(+0.23) | 41.26 | 7.14 | 16 R | R |
| H10 | 5.07(+0.17) | 46.33 | 6.90 | 16 L | L |
| Finish | 5.87 | 52.20 | 6.81 | — — | — |
Avg. interval
4.44s
Std. deviation
0.37
Deceleration
Stride pattern
Fastest interval: 3.83s (H2–H3).
Deceleration of 10.2% between the first half (8.13 m/s) and the second half (7.3 m/s).
Steady stride pattern.
Lead leg alternation: 2× Left, 8× Right.
All-time fastest sectors
Max speed
9.14m/s
Avg speed
7.66m/s
Std. deviation
0.37s