Progress against the field
Zonne Iedema and Nika Tilborghs have dropped 4:52 behind the field from Belgium 2025 to Maastricht 2026.
The clock says 2:13 faster, but the races themselves got 7:05 quicker for everyone.
241 days between Amsterdam 2026 and Maastricht 2026 is the longest gap compared here, and the second race was 1:42 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. The summary above covers Doubles Open · Women, with Nika Tilborghs, the one raced most; every comparison is in the list below.
Every race
10 races · 9 events
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Maastricht19 Sep 2026Doubles Open · Women1:09:0413/708Beat 98%
↑ 241 days after Amsterdam 2026, with Nika Tilborghs 1:42 worse than the field Why ↓Close ↑
2:13 slower on the clock in a race that was 0:31 slower for everyone: 1:42 lost to the field.
The fieldCompare these two →0:31 slower This pair2:13 slower -
Rotterdam15 Apr 2026Doubles Open · Mixed1:02:2723/1047Beat 98%
↑ 138 days after Utrecht 2025, with Daan Van De Ven 2:08 better than the field Why ↓Close ↑
6:24 faster on the clock, and the race was 4:16 faster for everyone, so 2:08 of it was this pair.
The fieldCompare these two →4:16 faster This pair6:24 faster -
Rotterdam15 Apr 2026Doubles Open · Women1:07:583/466Beat 99%
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Mechelen26 Mar 2026Relay · Mixed1:00:177/67Beat 90%
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Amsterdam21 Jan 2026Doubles Open · Women1:06:51 PB14/1030Beat 99%
↑ 124 days after Maastricht 2025, with Nika Tilborghs 0:33 better than the field Why ↓Close ↑
0:33 better than the field: 4:23 faster on the clock, against 3:50 faster for everyone.
The fieldCompare these two →3:50 faster This pair4:23 faster -
Utrecht28 Nov 2025Doubles Open · Mixed1:08:5118/381Beat 95%
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Maastricht19 Sep 2025Doubles Open · Women1:11:1434/739Beat 95%
↑ 167 days after Belgium 2025, with Nika Tilborghs 3:43 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:03 faster on the clock looks better than it was: the race was 3:46 faster for everyone, which leaves this 3:43 behind the field.
The fieldCompare these two →3:46 faster This pair0:03 faster -
Belgium5 Apr 2025Doubles Open · Women1:11:1736/713Beat 95%
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Rotterdam27 Feb 2025Doubles Open · Women1:19:5971/272Beat 74%
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BudapestDate unknownDoubles Open · Mixed59:43 PB25/425Beat 94%