| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 5.80 | 5.80 | 20 | G |
| H2 | 3.68 | 9.48 | 13 | G |
| H3 | 3.68(0.00) | 13.16 | 13 | G |
| H4 | 3.81(+0.13) | 16.97 | 13 | G |
| H5 | 3.88(+0.07) | 20.85 | 13 | G |
| H6 | 4.12(+0.24) | 24.97 | 13 | G |
| H7 | 4.16(+0.04) | 29.13 | 14 | D |
| H8 | 4.17(+0.01) | 33.30 | 14 | G |
| H9 | 4.36(+0.19) | 37.66 | 14 | D |
| H10 | 4.56(+0.20) | 42.22 | 14 | G |
| Finish | 5.36 | 47.58 | — | — |
Total time
Avg. interval
4.05s
Std. deviation
0.29
Deceleration
Stride pattern
New personal best!
Very consistent intervals (σ=0.29s).
Fastest interval: 3.68s (H2–H3).
Excellent fatigue resistance: only 9.3% speed loss between the first and second halves (8.87 → 8.04 m/s).
Steady stride pattern.
Lead leg alternation: 8× Left, 2× Right.
Stride count and lead leg, hurdle by hurdle
Percentile position, sector by sector
Faster than 78% of 400m hurdles Elite-level.
Actual percentile: 78
n = 148 races · 76 athletes
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 15 June 2023, CJ Allen (United States) ran their 400 metres hurdles in 47.58 seconds at Oslo (Diamond League). It's also their new personal best.
On 4h/world, this time earns CJ a Top 12% World ranking.