On 4 July 2021, Femke Broeders-Bol (Netherlands) ran their 400 metres hurdles in 52.37 seconds at Stockholm (Diamond League).
On 4h/world, this time earns Femke a Top 4% World ranking.
| 18.59 |
| 8.41 |
15 L |
L |
| H5 | 4.36(+0.20) | 22.95 | 8.03 | 15 L | L |
| H6 | 4.52(+0.16) | 27.47 | 7.74 | 15 L | L |
| H7 | 4.64(+0.12) | 32.11 | 7.54 | 15 L | L |
| H8 | 4.76(+0.12) | 36.87 | 7.35 | 15 L | L |
| H9 | 4.88(+0.12) | 41.75 | 7.17 | 15 L | L |
| H10 | 5.00(+0.12) | 46.75 | 7.00 | 15 L | L |
| Finish | 5.62 | 52.37 | 7.12 | — — | — |
Avg. interval
4.48s
Std. deviation
0.35
Deceleration
Stride pattern
Fastest interval: 4s (H2–H3).
Excellent fatigue resistance: only 9.3% speed loss between the first and second halves (8.06 → 7.31 m/s).
Steady stride pattern.
All-time slowest sectors
Max speed
8.75m/s
Avg speed
7.64m/s
Std. deviation
0.35s