Progress against the field
Sebastiaan Kooij has dropped 5:06 behind the field from Belgium 2025 to Amsterdam 2026.
Over the same races everyone got 6:37 quicker, so 1:31 faster on the clock looks better than it was.
The largest gain on the field came from Maastricht 2025 → Amsterdam 2026: 3:55 in 124 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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
7 races · 7 events
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Rotterdam15 Apr 2026Doubles Open · Mixed1:21:37 PB477/1047Beat 54%
↑ 138 days after Utrecht 2025, with Eveline Briet 0:14 better than the field Why ↓Close ↑
0:14 better than the field: 4:30 faster on the clock, against 4:16 faster for everyone.
The fieldCompare these two →4:16 faster This pair4:30 faster -
Mechelen26 Mar 2026Doubles Open · Men1:07:47 PB179/593Beat 70%
↑ 104 days after Gent 2025, with Barry De Vries 0:11 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:49 faster on the clock looks better than it was: the race was 3:00 faster for everyone, which leaves this 0:11 behind the field.
The fieldCompare these two →3:00 faster This pair2:49 faster -
Amsterdam21 Jan 2026Individual Open · Men1:23:31 PB294/608Beat 52%
↑ 124 days after Maastricht 2025 3:55 better than the field Why ↓Close ↑
11:54 faster on the clock, and the race was 7:59 faster for everyone, so 3:55 of it was this athlete.
The fieldCompare these two →7:59 faster This athlete11:54 faster -
Gent12 Dec 2025Doubles Open · Men1:10:36426/1164Beat 63%
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Utrecht28 Nov 2025Doubles Open · Mixed1:26:07205/381Beat 46%
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Maastricht19 Sep 2025Individual Open · Men1:35:25400/584Beat 32%
↑ 167 days after Belgium 2025 9:01 worse than the field Why ↓Close ↑
9:01 behind the field: 10:23 slower on the clock, against 1:22 slower for everyone.
The fieldCompare these two →1:22 slower This athlete10:23 slower -
Belgium5 Apr 2025Individual Open · Men1:25:02776/1638Beat 53%