Progress against the field
Between Heerenveen 2025 and Rotterdam 2026, Denise van der Kleij lost 4:16 to the field.
The clock says 2:15 faster, but the races themselves got 6:31 quicker for everyone.
The longest gap between two races compared here, 217 days between Heerenveen 2025 and Gent 2025, cost 1:07 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
7 races · 5 events
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Rotterdam15 Apr 2026Doubles Pro · Women1:15:54 PB78/226Beat 66%
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Rotterdam15 Apr 2026Individual Open · Women1:22:14116/695Beat 83%
↑ 124 days after Gent 2025 3:09 worse than the field Why ↓Close ↑
3:09 behind the field: 1:05 slower on the clock, against 2:04 faster for everyone.
The fieldCompare these two →2:04 faster This athlete1:05 slower -
Mechelen26 Mar 2026Doubles Open · Women1:11:0324/380Beat 94%
↑ 64 days after Amsterdam 2026, with Isabelle Jansen 2:53 worse than the field Why ↓Close ↑
1:13 slower on the clock in a race that was 1:40 faster for everyone: 2:53 lost to the field.
The fieldCompare these two →1:40 faster This pair1:13 slower -
Amsterdam21 Jan 2026Doubles Open · Women1:09:50 PB45/1030Beat 96%
↑ 40 days after Gent 2025, with Isabelle Jansen 4:14 better than the field Why ↓Close ↑
6:30 faster on the clock, and the race was 2:16 faster for everyone, so 4:14 of it was this pair.
The fieldCompare these two →2:16 faster This pair6:30 faster -
Gent12 Dec 2025Doubles Open · Women1:16:20128/882Beat 86%
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Gent12 Dec 2025Individual Open · Women1:21:09 PB175/1009Beat 83%
↑ 217 days after Heerenveen 2025 1:07 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:20 faster on the clock, yet the race was 4:27 faster for everyone, so 1:07 was lost on the field.
The fieldCompare these two →4:27 faster This athlete3:20 faster -
Heerenveen9 May 2025Individual Open · Women1:24:29111/571Beat 81%