On 26 July 2026, Vanessa Mercera (Netherlands) ran their 400 metres hurdles in 57.59 seconds at Hengelo (Netherlands Championships).
| 19.11 |
| 8.03 |
15 L |
L |
| H5 | 4.50(+0.14) | 23.61 | 7.78 | 15 L | L |
| H6 | 4.88(+0.38) | 28.49 | 7.17 | 16 R | R |
| H7 | 5.38(+0.50) | 33.87 | 6.51 | 17 R | R |
| H8 | 5.78(+0.40) | 39.65 | 6.06 | 18 L | L |
| H9 | 5.66(-0.12) | 45.31 | 6.18 | 17 L | L |
| H10 | 5.58(-0.08) | 50.89 | 6.27 | 17 L | L |
| Finish | 6.70 | 57.59 | 5.97 | — — | — |
Avg. interval
4.93s
Std. deviation
0.64
Deceleration
Stride pattern
High variability between intervals (σ=0.64s).
Fastest interval: 4.1s (H2–H3).
High deceleration: 19.3% speed loss in the second half (7.84 → 6.33 m/s), to work on with speed endurance.
Stutter on H6, H8.
Lead leg alternation: 8× Left, 2× Right.