On 30 June 2026, Noah Langford (United States) ran their 400 metres hurdles in 50.40 seconds at Montréal (Montréal Meeting).
| 18.18 |
| 8.60 |
13 R |
R |
| H5 | 4.13(+0.06) | 22.31 | 8.47 | 13 R | R |
| H6 | 4.23(+0.10) | 26.54 | 8.27 | 13 R | R |
| H7 | 4.47(+0.24) | 31.01 | 7.83 | 15 R | R |
| H8 | 4.57(+0.10) | 35.58 | 7.66 | 15 R | R |
| H9 | 4.60(+0.03) | 40.18 | 7.61 | 15 R | R |
| H10 | 4.67(+0.07) | 44.85 | 7.49 | 15 R | R |
| Finish | 5.55 | 50.40 | 7.21 | — — | — |
Avg. interval
4.30s
Std. deviation
0.27
Deceleration
Stride pattern
Very consistent intervals (σ=0.27s).
Fastest interval: 3.87s (H2–H3).
Excellent fatigue resistance: only 7.7% speed loss between the first and second halves (8.29 → 7.65 m/s).
Stutter on H7, H8.