Progress against the field
Between Amsterdam 2023 and Maastricht 2025, Jeroen Van Der Weijden pulled 13:14 ahead of the field.
Over the same races everyone got 10:57 quicker, so 24:11 faster on the clock looks better than it was.
211 days between Amsterdam 2024 and Heerenveen 2025 is the longest gap compared here, and the second race was 7:01 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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
13 races · 13 events
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Maastricht19 Sep 2026Individual Pro · MenDNF—
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Rotterdam15 Apr 2026Doubles Open · Men59:44 PB24/674Beat 96%
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Amsterdam21 Jan 2026Individual Pro · Men1:20:14 PB62/107Beat 42%
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Gent12 Dec 2025Doubles Open · Mixed1:03:16 PB39/863Beat 96%
↑ 251 days after Belgium 2025, with Marcha Duijkers 1:16 better than the field Why ↓Close ↑
1:16 better than the field: 3:58 faster on the clock, against 2:42 faster for everyone.
The fieldCompare these two →2:42 faster This pair3:58 faster -
Utrecht28 Nov 2025Doubles Pro · Men1:01:54 PB19/148Beat 87%
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Maastricht19 Sep 2025Individual Open · Men1:12:33 PB66/584Beat 89%
↑ 133 days after Heerenveen 2025 12:29 better than the field Why ↓Close ↑
The race was 1:42 slower for everyone and the clock still says 10:47 faster: 12:29 gained on the field.
The fieldCompare these two →1:42 slower This athlete10:47 faster -
Heerenveen9 May 2025Individual Open · Men1:23:20139/325Beat 57%
↑ 211 days after Amsterdam 2024 7:01 worse than the field Why ↓Close ↑
7:01 behind the field: 4:21 slower on the clock, against 2:40 faster for everyone.
The fieldCompare these two →2:40 faster This athlete4:21 slower -
Belgium5 Apr 2025Doubles Open · Mixed1:07:1462/722Beat 91%
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Rotterdam27 Feb 2025Individual Open · MenDNF—
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Amsterdam10 Oct 2024Individual Open · Men1:18:59182/659Beat 72%
↑ 187 days after Rotterdam 2024 1:21 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:26 faster on the clock, yet the race was 6:47 faster for everyone, so 1:21 was lost on the field.
The fieldCompare these two →6:47 faster This athlete5:26 faster -
Rotterdam6 Apr 2024Individual Open · Men1:24:25395/1380Beat 71%
↑ 77 days after Maastricht 2024 0:43 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
1:06 slower on the clock, but the race was 1:49 slower for everyone, so this was 0:43 better than the field.
The fieldCompare these two →1:49 slower This athlete1:06 slower -
Maastricht20 Jan 2024Individual Open · Men1:23:19325/781Beat 58%
↑ 77 days after Amsterdam 2023 8:24 better than the field Why ↓Close ↑
8:24 better than the field: 13:25 faster on the clock, against 5:01 faster for everyone.
The fieldCompare these two →5:01 faster This athlete13:25 faster -
Amsterdam4 Nov 2023Individual Open · Men1:36:44759/1079Beat 30%