On 28 June 2026, Michelle Smith (U.S. Virgin Islands) ran their 400 metres hurdles in 54.93 seconds at Medellín (PANAM Championships). It's also their new personal best.
| 19.57 |
| 7.94 |
15 R |
R |
| H5 | 4.51(+0.10) | 24.08 | 7.76 | 15 R | R |
| H6 | 4.78(+0.27) | 28.86 | 7.32 | 16 L | L |
| H7 | 4.74(-0.04) | 33.60 | 7.38 | 16 R | R |
| H8 | 5.04(+0.30) | 38.64 | 6.94 | 16 L | L |
| H9 | 5.24(+0.20) | 43.88 | 6.68 | 17 L | L |
| H10 | 5.21(-0.03) | 49.09 | 6.72 | 17 L | L |
| Finish | 5.84 | 54.93 | 6.85 | — — | — |
Avg. interval
4.73s
Std. deviation
0.35
Deceleration
Stride pattern
New personal best!
Fastest interval: 4.28s (H3–H4).
Excellent fatigue resistance: only 9.3% speed loss between the first and second halves (7.68 → 6.97 m/s).
Steady stride pattern.
Lead leg alternation: 4× Left, 6× Right.
Max speed
8.18m/s
Avg speed
7.28m/s
Std. deviation
0.35s