Progress against the field
From Amsterdam 2024 to Rotterdam 2025, Liesbeth Wierda has moved with the field: what changed on the clock changed for everyone.
Over the same races everyone got 2:49 quicker, so 2:58 faster on the clock looks better than it was.
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 Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
13 races · 11 events
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Izmir19 Sep 2026Doubles Open · Mixed1:20:23 PB57/140Beat 59%
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Stockholm18 Jun 2026Doubles Pro · Women1:20:34587/689Beat 15%
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Heerenveen14 May 2026Relay · Women1:10:285/64Beat 92%
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Heerenveen14 May 2026Doubles Open · Women1:15:49 PB95/513Beat 82%
↑ 370 days after Heerenveen 2025, with Corine de Jong 2:05 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:42 faster on the clock looks better than it was: the race was 3:47 faster for everyone, which leaves this 2:05 behind the field.
The fieldCompare these two →3:47 faster This pair1:42 faster -
Paris GP23 Apr 2026Doubles Open · Women1:17:34178/845Beat 79%
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Rotterdam15 Apr 2026Doubles Pro · Women1:17:46 PB94/226Beat 58%
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Vienna6 Feb 2026Doubles Pro · Women1:20:5356/91Beat 39%
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Amsterdam21 Jan 2026Doubles Open · Women1:20:16341/1030Beat 67%
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Maastricht19 Sep 2025Doubles Pro · Women1:19:3920/62Beat 68%
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Heerenveen9 May 2025Doubles Open · Women1:17:3165/292Beat 78%
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Heerenveen9 May 2025Relay · Women1:10:256/42Beat 86%
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Rotterdam27 Feb 2025Individual Open · Women1:26:54 PB141/506Beat 72%
↑ 140 days after Amsterdam 2024 0:09 better than the field Why ↓Close ↑
Moved with the field: 2:58 faster on the clock, against 2:49 faster for everyone.
The fieldCompare these two →2:49 faster This athlete2:58 faster -
Amsterdam10 Oct 2024Individual Open · Women1:29:52257/678Beat 62%