On 9 July 2026, Tommaso Ardizzone (Italy) ran their 400 metres hurdles in 52.32 seconds at Caorle (Italy Championships U20).
| 18.59 |
| 8.54 |
15 R |
R |
| H5 | 4.26(+0.16) | 22.85 | 8.22 | 15 R | R |
| H6 | 4.38(+0.12) | 27.23 | 7.99 | 15 R | R |
| H7 | 4.52(+0.14) | 31.75 | 7.74 | 15 R | R |
| H8 | 4.76(+0.24) | 36.51 | 7.35 | 15 R | R |
| H9 | 5.08(+0.32) | 41.59 | 6.89 | 16 L | L |
| H10 | 5.10(+0.02) | 46.69 | 6.86 | 16 R | R |
| Finish | 5.63 | 52.32 | 7.10 | — — | — |
Avg. interval
4.48s
Std. deviation
0.40
Deceleration
Stride pattern
Fastest interval: 4.02s (H2–H3).
Excellent fatigue resistance: only 9.9% speed loss between the first and second halves (8.1 → 7.3 m/s).
Steady stride pattern.
Hurdle fault on H9.
Lead leg alternation: 1× Left, 9× Right.