Progress against the field
Sam Van der Heijden and Iris Ijzermans have gained 7:08 on the field from Gent 2025 to Rotterdam 2026.
The clock says 10:24 faster, but the races themselves got 3:16 quicker for everyone.
The biggest step was Amsterdam 2026 → Rotterdam 2026: 6:48 on the field in 84 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
3 races · 3 events
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Rotterdam15 Apr 2026Doubles Open · Women1:24:49 PB432/936Beat 54%
↑ 84 days after Amsterdam 2026, with Iris Ijzermans 6:48 better than the field Why ↓Close ↑
6:48 better than the field: 7:48 faster on the clock, against 1:00 faster for everyone.
The fieldCompare these two →1:00 faster This pair7:48 faster -
Amsterdam21 Jan 2026Doubles Open · Women1:32:37219/307Beat 29%
↑ 40 days after Gent 2025, with Iris Ijzermans 0:20 better than the field Why ↓Close ↑
2:36 faster on the clock, and the race was 2:16 faster for everyone, so 0:20 of it was this pair.
The fieldCompare these two →2:16 faster This pair2:36 faster -
Gent12 Dec 2025Doubles Open · Women1:35:13674/882Beat 24%