Progress against the field
Between Rotterdam 2025 and Heerenveen 2026, Marije Heidema and Robin Kamstra pulled 1:49 ahead of the field.
Over the same races everyone got 6:32 quicker, so 8:21 faster on the clock looks better than it was.
370 days between Heerenveen 2025 and Heerenveen 2026 is the longest gap compared here, and the second race was 2:42 behind 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.
Every race
4 races · 4 events
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Heerenveen14 May 2026Doubles Open · Mixed1:15:42 PB165/461Beat 64%
↑ 370 days after Heerenveen 2025, with Robin Kamstra 2:42 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:43 faster on the clock, yet the race was 3:25 faster for everyone, so 2:42 was lost on the field.
The fieldCompare these two →3:25 faster This pair0:43 faster -
Utrecht28 Nov 2025Individual Open · Women1:30:47 PB87/254Beat 66%
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Heerenveen9 May 2025Doubles Open · Mixed1:16:2580/250Beat 68%
↑ 71 days after Rotterdam 2025, with Robin Kamstra 4:31 better than the field Why ↓Close ↑
4:31 better than the field: 7:38 faster on the clock, against 3:07 faster for everyone.
The fieldCompare these two →3:07 faster This pair7:38 faster -
Rotterdam27 Feb 2025Doubles Open · Mixed1:24:03190/353Beat 46%