On 9 August 2026, Mariam Kareem (United Arab Emirates) ran their 400 metres hurdles in 56.27 seconds at Eugene (World Championships U20).
| 20.70 |
| 7.45 |
15 L |
L |
| H5 | 4.80(+0.10) | 25.50 | 7.29 | 15 L | L |
| H6 | 5.10(+0.30) | 30.60 | 6.86 | 16 R | R |
| H7 | 4.97(-0.13) | 35.57 | 7.04 | 16 L | L |
| H8 | 5.07(+0.10) | 40.64 | 6.90 | 16 R | R |
| H9 | 5.03(-0.04) | 45.67 | 6.96 | 16 L | L |
| H10 | 5.00(-0.03) | 50.67 | 7.00 | 16 R | R |
| Finish | 5.60 | 56.27 | 7.14 | — — | — |
Avg. interval
4.86s
Std. deviation
0.21
Deceleration
Stride pattern
Very consistent intervals (σ=0.21s).
Fastest interval: 4.53s (H2–H3).
Very low deceleration (3.7%: 7.25 → 6.99 m/s), a likely sign of an over-managed first half.
Steady stride pattern.
Lead leg alternation: 7× Left, 3× Right.