On 26 July 2026, Jevon Williams (United States) ran their 400 metres hurdles in 49.48 seconds at New York (United States Championships).
| 17.80 |
| 8.71 |
13 R |
R |
| H5 | 4.05(+0.03) | 21.85 | 8.64 | 13 R | R |
| H6 | 4.29(+0.24) | 26.14 | 8.16 | 14 L | L |
| H7 | 4.43(+0.14) | 30.57 | 7.90 | 14 R | R |
| H8 | 4.66(+0.23) | 35.23 | 7.51 | 15 R | R |
| H9 | 4.48(-0.18) | 39.71 | 7.81 | 15 R | R |
| H10 | 4.66(+0.18) | 44.37 | 7.51 | 15 R | R |
| Finish | 5.11 | 49.48 | 7.83 | — — | — |
Avg. interval
4.27s
Std. deviation
0.29
Deceleration
Stride pattern
Very consistent intervals (σ=0.29s).
Fastest interval: 3.9s (H2–H3).
Excellent fatigue resistance: only 8.1% speed loss between the first and second halves (8.47 → 7.78 m/s).
Steady stride pattern.
Lead leg alternation: 1× Left, 9× Right.
Max speed
8.97m/s
Avg speed
8.08m/s
Std. deviation
0.29s