Progress against the field
From Heerenveen 2025 to Rotterdam 2026, Kathelijn Heye got 3:01 faster than the field.
The clock says 8:27 faster, but the races themselves got 5:26 quicker for everyone.
The biggest step was Heerenveen 2025 → Maastricht 2025: 3:01 on the field in 133 days.
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.
Every race
6 races · 6 events
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Valencia17 Oct 2026Individual Open · Women1:29:08 PB221/539Beat 59%
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Maastricht19 Sep 2026Doubles Open · Women1:26:04 PB263/708Beat 63%
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Rotterdam15 Apr 2026Individual Open · Women1:34:10113/236Beat 52%
↑ 208 days after Maastricht 2025 0:00 better than the field Why ↓Close ↑
4:22 faster on the clock, and the race was 4:22 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →4:22 faster This athlete4:22 faster -
Utrecht28 Nov 2025Individual Pro · Women1:57:58 PB62/67Beat 8%
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Maastricht19 Sep 2025Individual Open · Women1:38:32361/590Beat 39%
↑ 133 days after Heerenveen 2025 3:01 better than the field Why ↓Close ↑
3:01 better than the field: 4:05 faster on the clock, against 1:04 faster for everyone.
The fieldCompare these two →1:04 faster This athlete4:05 faster -
Heerenveen9 May 2025Individual Open · Women1:42:37136/183Beat 26%