Progress against the field
Between Rotterdam 2024 and Mechelen 2026, petra de Ligt and Marlies Peters lost 8:45 to the field.
The clock says 1:46 faster, but the races themselves got 10:31 quicker for everyone.
The longest gap between two races compared here, 364 days between Rotterdam 2024 and Belgium 2025, still ended 1:06 ahead of the field.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown. The summary above covers Doubles Open · Women, with Marlies Peters, the one raced most; every comparison is in the list below.
Every race
9 races · 9 events
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Rotterdam15 Apr 2026Relay · Women1:30:4960/84Beat 29%
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Mechelen26 Mar 2026Doubles Open · Women1:46:32940/1017Beat 8%
↑ 188 days after Maastricht 2025, with Marlies Peters 9:51 worse than the field Why ↓Close ↑
5:15 slower on the clock in a race that was 4:36 faster for everyone: 9:51 lost to the field.
The fieldCompare these two →4:36 faster This pair5:15 slower -
Utrecht28 Nov 2025Doubles Open · Women1:44:19261/294Beat 11%
↑ 274 days after Rotterdam 2025, with Sonja Seymor Da Cruz 4:18 worse than the field Why ↓Close ↑
1:34 slower on the clock in a race that was 2:44 faster for everyone: 4:18 lost to the field.
The fieldCompare these two →2:44 faster This pair1:34 slower -
Maastricht19 Sep 2025Doubles Open · Women1:41:17 PB661/739Beat 11%
↑ 167 days after Belgium 2025, with Marlies Peters 0:00 better than the field Why ↓Close ↑
3:46 faster on the clock, and the race was 3:46 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →3:46 faster This pair3:46 faster -
Belgium5 Apr 2025Doubles Open · Women1:45:03646/713Beat 9%
↑ 364 days after Rotterdam 2024, with Marlies Peters 1:06 better than the field Why ↓Close ↑
3:15 faster on the clock, and the race was 2:09 faster for everyone, so 1:06 of it was this pair.
The fieldCompare these two →2:09 faster This pair3:15 faster -
Rotterdam27 Feb 2025Doubles Open · Women1:42:45572/633Beat 10%
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Amsterdam10 Oct 2024Doubles Open · Women1:43:21265/308Beat 14%
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Rotterdam6 Apr 2024Doubles Open · Women1:48:18511/564Beat 9%
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Amsterdam4 Nov 2023Relay · Women1:34:3413/19Beat 32%