On 9 August 2026, Miller Warme (United States) ran their 400 metres hurdles in 50.06 seconds at Eugene (World Championships U20).
| 17.89 |
| 8.73 |
15 R |
R |
| H5 | 4.00(-0.01) | 21.89 | 8.75 | 15 R | R |
| H6 | 4.17(+0.17) | 26.06 | 8.39 | 15 R | R |
| H7 | 4.53(+0.36) | 30.59 | 7.73 | 15 R | R |
| H8 | 4.57(+0.04) | 35.16 | 7.66 | 15 R | R |
| H9 | 4.70(+0.13) | 39.86 | 7.45 | 15 R | R |
| H10 | 4.77(+0.07) | 44.63 | 7.34 | 15 R | R |
| Finish | 5.43 | 50.06 | 7.37 | — — | — |
Avg. interval
4.28s
Std. deviation
0.34
Deceleration
Stride pattern
Fastest interval: 3.8s (H2–H3).
Excellent fatigue resistance: only 9.7% speed loss between the first and second halves (8.45 → 7.63 m/s).
Steady stride pattern.