On 20 June 2026, Marie-Frédérique Poulin (Canada) ran their 400 metres hurdles in 58.16 seconds at Ottawa (Canada Championships).
| 19.77 |
| 7.74 |
17 L |
L |
| H5 | 4.63(+0.11) | 24.40 | 7.56 | 17 L | L |
| H6 | 4.90(+0.27) | 29.30 | 7.14 | 17 L | L |
| H7 | 5.33(+0.43) | 34.63 | 6.57 | 19 L | L |
| H8 | 5.40(+0.07) | 40.03 | 6.48 | 19 L | L |
| H9 | 5.60(+0.20) | 45.63 | 6.25 | 19 L | L |
| H10 | 5.80(+0.20) | 51.43 | 6.03 | 19 L | L |
| Finish | 6.73 | 58.16 | 5.94 | — — | — |
Avg. interval
4.98s
Std. deviation
0.53
Deceleration
Stride pattern
High variability between intervals (σ=0.53s).
Fastest interval: 4.27s (H2–H3).
High deceleration: 16% speed loss in the second half (7.58 → 6.37 m/s), to work on with speed endurance.
Steady stride pattern.
Hurdle fault on H6.
Lead leg alternation: 9× Left, 1× Right.