| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 5.93 | 5.93 | 20 | G |
| H2 | 3.80 | 9.73 | 13 | G |
| H3 | 4.18(+0.38) | 13.91 | 13 | G |
| H4 | 3.89(-0.29) | 17.80 | 13 | G |
| H5 | 4.04(+0.15) | 21.84 | 14 | D |
| H6 | 4.14(+0.10) | 25.98 | 14 | G |
| H7 | 4.17(+0.03) | 30.15 | 15 | G |
| H8 | 4.39(+0.22) | 34.54 | 15 | G |
| H9 | 4.43(+0.04) | 38.97 | 15 | G |
| H10 | 4.58(+0.15) | 43.55 | 15 | G |
| Finish | 5.13 | 48.68 | — | — |
Total time
Avg. interval
4.18s
Std. deviation
0.24
Deceleration
Stride pattern
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Very consistent intervals (σ=0.24s).
Fastest interval: 3.8s (H2–H3).
Very low deceleration (5.4%: 8.47 → 8.01 m/s), a likely sign of an over-managed first half.
Stutter on H7.
Lead leg alternation: 9× Left, 1× Right.
Stride count and lead leg, hurdle by hurdle
Percentile position, sector by sector
Faster than 35% of 400m hurdles Elite-level.
Actual percentile: 35
n = 148 races · 75 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 11 July 2026, Xinfeng Xu (China) ran their 400 metres hurdles in 48.68 seconds at Ordos (Asia Championships).
The closest performance recorded on 4h/world belongs to James Smith II (48.68s at Edmonton), with 0.00 seconds away.
This performance is the china record.