| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 5.70 | 5.70 | 20 | G |
| H2 | 3.53 | 9.23 | 13 | G |
| H3 | 3.67(+0.14) | 12.90 | 12 | D |
| H4 | 3.51(-0.16) | 16.41 | 12 | G |
| H5 | 3.72(+0.21) | 20.13 | 12 | D |
| H6 | 3.90(+0.18) | 24.03 | 12 | G |
| H7 | 4.09(+0.19) | 28.12 | 13 | G |
| H8 | 4.20(+0.11) | 32.32 | 13 | G |
| H9 | 4.37(+0.17) | 36.69 | 13 | G |
| H10 | 4.40(+0.03) | 41.09 | 13 | G |
| Finish | 5.20 | 46.29 | — | — |
Total time
Avg. interval
3.93s
Std. deviation
0.33
Deceleration
Stride pattern
Fastest interval: 3.51s (H4–H5).
Deceleration of 10.6% between the first half (9.19 m/s) and the second half (8.22 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 96% of 400m hurdles Elite-level.
Actual percentile: 96
n = 155 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 19 July 2022, Alison Dos Santos (Brazil) ran their 400 metres hurdles in 46.29 seconds at Eugene (World Championships).
On 4h/world, this time earns Alison a Top 2% World ranking.
This performance is the south America record U23.