| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 6.35 | 6.35 | 23 | D |
| H2 | 4.08 | 10.43 | 15 | D |
| H3 | 4.16(+0.08) | 14.59 | 15 | D |
| H4 | 4.36(+0.20) | 18.95 | 15 | D |
| H5 | 4.48(+0.12) | 23.43 | 15 | D |
| H6 | 4.48(0.00) | 27.91 | 15 | D |
| H7 | 4.56(+0.08) | 32.47 | 15 | D |
| H8 | 4.60(+0.04) | 37.07 | 15 | D |
| H9 | 4.84(+0.24) | 41.91 | 16 | G |
| H10 | 4.96(+0.12) | 46.87 | 16 | D |
| Finish | 5.52 | 52.39 | — | — |
Total time
Avg. interval
4.50s
Std. deviation
0.27
Deceleration
Stride pattern
New personal best!
Very consistent intervals (σ=0.27s).
Fastest interval: 4.08s (H2–H3).
Excellent fatigue resistance: only 6% speed loss between the first and second halves (7.9 → 7.42 m/s).
Steady stride pattern.
Lead leg alternation: 1× Left, 9× Right.
Stride count and lead leg, hurdle by hurdle
Percentile position, sector by sector
Faster than 90% of 400m hurdles Elite-level.
Actual percentile: 90
n = 122 races · 58 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 4 July 2021, Shamier Little (United States) ran their 400 metres hurdles in 52.39 seconds at Stockholm (Diamond League). It's also their new personal best.
On 4h/world, this time earns Shamier a Top 5% World ranking.