Progress against the field
Between Heerenveen 2025 and Maastricht 2026, Tiana Martens lost 15:21 to the field.
Over the same races everyone got 3:50 quicker, so 11:31 slower on the clock looks better than it was.
The longest gap between two races compared here, 295 days between Utrecht 2025 and Maastricht 2026, cost 7:50 on 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 Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
8 races · 7 events
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Maastricht19 Sep 2026Individual Open · Women1:42:58397/577Beat 31%
↑ 295 days after Utrecht 2025 7:50 worse than the field Why ↓Close ↑
5:59 slower on the clock in a race that was 1:51 faster for everyone: 7:50 lost to the field.
The fieldCompare these two →1:51 faster This athlete5:59 slower -
Mechelen26 Mar 2026Doubles Open · Women1:24:53178/380Beat 53%
↑ 392 days after Rotterdam 2025, with Anneke Diederen 1:42 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:01 faster on the clock looks better than it was: the race was 3:43 faster for everyone, which leaves this 1:42 behind the field.
The fieldCompare these two →3:43 faster This pair2:01 faster -
Amsterdam21 Jan 2026Doubles Open · Women1:16:11 PB53/297Beat 82%
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Utrecht28 Nov 2025Individual Open · Women1:36:59120/254Beat 53%
↑ 203 days after Heerenveen 2025 7:31 worse than the field Why ↓Close ↑
7:31 behind the field: 5:32 slower on the clock, against 1:59 faster for everyone.
The fieldCompare these two →1:59 faster This athlete5:32 slower -
Maastricht19 Sep 2025Doubles Open · Mixed1:29:54 PB247/364Beat 32%
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Maastricht19 Sep 2025Relay · Women1:20:0116/43Beat 63%
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Heerenveen9 May 2025Individual Open · Women1:31:27 PB211/571Beat 63%
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Rotterdam27 Feb 2025Doubles Open · Women1:26:54152/272Beat 44%