On 28 June 2026, Grace Claxton (Puerto Rico) ran their 400 metres hurdles in 55.14 seconds at Medellín (PANAM Championships). It's also their new personal best.
| 19.28 |
| 7.99 |
15 L |
L |
| H5 | 4.64(+0.26) | 23.92 | 7.54 | 16 R | R |
| H6 | 4.81(+0.17) | 28.73 | 7.28 | 16 L | L |
| H7 | 4.84(+0.03) | 33.57 | 7.23 | 16 R | R |
| H8 | 5.21(+0.37) | 38.78 | 6.72 | 17 R | R |
| H9 | 5.21(0.00) | 43.99 | 6.72 | 17 R | R |
| H10 | 5.21(0.00) | 49.20 | 6.72 | 17 R | R |
| Finish | 5.94 | 55.14 | 6.73 | — — | — |
Avg. interval
4.77s
Std. deviation
0.36
Deceleration
Stride pattern
New personal best!
Fastest interval: 4.28s (H3–H4).
Deceleration of 11% between the first half (7.73 m/s) and the second half (6.89 m/s).
Steady stride pattern.
Lead leg alternation: 5× Left, 5× Right.