Progress against the field
Isabelle Schalkwijk and Reinout Schalkwijk have dropped 4:05 behind the field from Amsterdam 2026 to Maastricht 2026.
Over the same races everyone got 0:46 slower, so 4:51 slower on the clock looks worse than it was.
The biggest step was Berlin 2026 → Maastricht 2026: 2:09 on the field in 120 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. The summary above covers Doubles Open · Mixed, with Reinout Schalkwijk, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Maastricht19 Sep 2026Doubles Open · Mixed1:18:43155/444Beat 65%
↑ 120 days after Berlin 2026, with Reinout Schalkwijk 2:09 better than the field Why ↓Close ↑
3:04 faster on the clock, and the race was 0:55 faster for everyone, so 2:09 of it was this pair.
The fieldCompare these two →0:55 faster This pair3:04 faster -
Berlin22 May 2026Doubles Open · Mixed1:21:47403/960Beat 58%
↑ 121 days after Amsterdam 2026, with Reinout Schalkwijk 6:14 worse than the field Why ↓Close ↑
7:55 slower on the clock in a race that was 1:41 slower for everyone: 6:14 lost to the field.
The fieldCompare these two →1:41 slower This pair7:55 slower -
Rotterdam15 Apr 2026Individual Open · Women1:27:46113/485Beat 77%
↑ 20 days after Mechelen 2026 4:06 worse than the field Why ↓Close ↑
4:06 behind the field: 4:14 slower on the clock, against 0:08 slower for everyone.
The fieldCompare these two →0:08 slower This athlete4:14 slower -
Mechelen26 Mar 2026Individual Open · Women1:23:32 PB45/169Beat 73%
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Amsterdam21 Jan 2026Doubles Open · Mixed1:13:52 PB374/1206Beat 69%