| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 6.08 | 6.08 | — | G |
| H2 | 3.80 | 9.88 | 13 | G |
| H3 | 3.87(+0.07) | 13.75 | 13 | G |
| H4 | 3.93(+0.06) | 17.68 | 13 | G |
| H5 | 4.03(+0.10) | 21.71 | 13 | G |
| H6 | 4.17(+0.14) | 25.88 | 14 | D |
| H7 | 4.13(-0.04) | 30.01 | 14 | G |
| H8 | 4.27(+0.14) | 34.28 | 15 | G |
| H9 | 4.40(+0.13) | 38.68 | 15 | G |
| H10 | 4.60(+0.20) | 43.28 | — | — |
| Finish | 5.40 | 48.68 | — | — |
Total time
Avg. interval
4.13s
Std. deviation
0.25
Deceleration
Stride pattern
New personal best!
Very consistent intervals (σ=0.25s).
Fastest interval: 3.8s (H2–H3).
Excellent fatigue resistance: only 6.4% speed loss between the first and second halves (8.52 → 7.97 m/s).
Lead leg alternation: 8× Left, 1× Right.
Stride count and lead leg, hurdle by hurdle
Your splits vs a reference based on K. Warholm · 45.94s
| Hurdle | Actual | Reference | Gap |
|---|---|---|---|
| H1 | 6.08 | 6.06 | +0.02 |
| H2 | 9.88 | 9.72 | +0.16 |
| H3 | 13.75 | 13.53 | +0.22 |
| H4 | 17.68 | 17.36 | +0.32 |
| H5 | 21.71 | 21.21 | +0.50 |
| H6 | 25.88 | 25.28 | +0.60 |
| H7 | 30.01 | 29.53 | +0.48 |
| H8 | 34.28 | 33.96 | +0.32 |
| H9 | 38.68 | 38.56 | +0.12 |
| H10 | 43.28 | 43.22 | +0.06 |
| Finish | 48.68 | 48.68 | 0.00 |
Negative gap = ahead of the reference (fast start), positive = behind. The reference distributes the target time like the reference performance.
On 12 July 2026, James Smith II (United States) ran their 400 metres hurdles in 48.68 seconds at Edmonton (National Meeting). It's also their new personal best.