| Sectors | Splits | Cumulative | Strides | Lead leg |
|---|---|---|---|---|
| Start - H1 | 6.50 | 6.50 | 23 | G |
| H2 | 4.03 | 10.53 | 15 | G |
| H3 | 4.18(+0.15) | 14.71 | 15 | G |
| H4 | 4.28(+0.10) | 18.99 | 15 | G |
| H5 | 4.38(+0.10) | 23.37 | 15 | G |
| H6 | 4.44(+0.06) | 27.81 | 15 | G |
| H7 | 4.69(+0.25) | 32.50 | — | — |
| H8 | 4.82(+0.13) | 37.32 | — | D |
| H9 | 4.87(+0.05) | 42.19 | 16 | G |
| H10 | 5.07(+0.20) | 47.26 | 17 | — |
| Finish | 5.64 | 52.90 | — | — |
Total time
Avg. interval
4.53s
Std. deviation
0.33
Deceleration
Stride pattern
New personal best!
Fastest interval: 4.03s (H2–H3).
Excellent fatigue resistance: only 8% speed loss between the first and second halves (7.92 → 7.28 m/s).
Lead leg alternation: 7× Left, 1× 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 = 122 races · 57 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 16 August 1995, Tonja Buford (United States) ran their 400 metres hurdles in 52.90 seconds at Zürich (International Meeting). It's also their new personal best.
On 4h/world, this time earns Tonja a Top 10% World ranking.