| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 5.79 | 5.79 | 20 | G |
| H2 | 3.67 | 9.46 | 13 | G |
| H3 | 3.64(-0.03) | 13.10 | 13 | G |
| H4 | 3.84(+0.20) | 16.94 | 13 | G |
| H5 | 3.83(-0.01) | 20.77 | 13 | G |
| H6 | 4.00(+0.17) | 24.77 | 13 | G |
| H7 | 4.20(+0.20) | 28.97 | 14 | D |
| H8 | 4.60(+0.40) | 33.57 | 15 | D |
| H9 | 4.58(-0.02) | 38.15 | 16 | G |
| H10 | 4.97(+0.39) | 43.12 | 15 | G |
| Finish | 5.97 | 49.09 | — | — |
Total time
Avg. interval
4.15s
Std. deviation
0.44
Deceleration
Stride pattern
Fastest interval: 3.64s (H3–H4).
Deceleration of 14.8% between the first half (8.91 m/s) and the second half (7.59 m/s).
Stride count too high on hurdle intervals: H9, indicating fatigue or a technical imbalance.
Stutter on H8, H9.
Lead leg alternation: 8× Left, 2× Right.
Stride count and lead leg, hurdle by hurdle
Percentile position, sector by sector
Faster than 17% of Elite-level races.
n = 105 races
Position within the pacing-consistency distribution (a higher value isn't necessarily a better race).
Position within the speed-loss distribution between the two race halves (a low value isn't always better pacing).
Hurdle fault rate, compared to the database.
On 26 July 2026, CJ Allen (United States) ran their 400 metres hurdles in 49.09 seconds at New York (United States Championships).
Source: https://results.usatf.org