On 31 July 2026, Alastair Chalmers (United Kingdom) ran their 400 metres hurdles in 50.24 seconds at Glasgow (Commonwealth Games).
| 17.35 |
| 8.97 |
13 L |
L |
| H5 | 4.07(+0.17) | 21.42 | 8.60 | 13 L | L |
| H6 | 4.17(+0.10) | 25.59 | 8.39 | 13 L | L |
| H7 | 4.70(+0.53) | 30.29 | 7.45 | 16 R | R |
| H8 | 4.60(-0.10) | 34.89 | 7.61 | 14 L | L |
| H9 | 4.70(+0.10) | 39.59 | 7.45 | 15 L | L |
| H10 | 4.74(+0.04) | 44.33 | 7.38 | 15 L | L |
| Finish | 5.91 | 50.24 | 6.77 | — — | — |
Avg. interval
4.27s
Std. deviation
0.39
Deceleration
Stride pattern
Fastest interval: 3.7s (H2–H3).
Deceleration of 13.6% between the first half (8.64 m/s) and the second half (7.46 m/s).
Stride count too high on hurdle intervals: H7, indicating fatigue or a technical imbalance.
Hurdle fault on H6.
Lead leg alternation: 9× Left, 1× Right.