Progress against the field
From Utrecht 2025 to Maastricht 2026, the field gained 4:24 on Sil Wiersma.
The clock says 2:05 faster, but the races themselves got 6:29 quicker for everyone.
The biggest step was Gent 2025 → Amsterdam 2026: 2:41 on the field in 40 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 Pro · Men, the one raced most; every comparison is in the list below.
Every race
15 races · 13 events
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Maastricht19 Sep 2026Individual Pro · Men1:04:3249/399Beat 88%
↑ 128 days after Heerenveen 2026 1:47 worse than the field Why ↓Close ↑
3:11 slower on the clock in a race that was 1:24 slower for everyone: 1:47 lost to the field.
The fieldCompare these two →1:24 slower This athlete3:11 slower -
Heerenveen14 May 2026Individual Pro · Men1:01:2118/454Beat 96%
↑ 29 days after Rotterdam 2026 2:39 worse than the field Why ↓Close ↑
0:18 slower on the clock in a race that was 2:21 faster for everyone: 2:39 lost to the field.
The fieldCompare these two →2:21 faster This athlete0:18 slower -
Rotterdam15 Apr 2026Individual Pro · Men1:01:0312/348Beat 97%
↑ 20 days after Mechelen 2026 0:21 worse than the field Why ↓Close ↑
0:21 behind the field: 1:44 slower on the clock, against 1:23 slower for everyone.
The fieldCompare these two →1:23 slower This athlete1:44 slower -
Mechelen26 Mar 2026Doubles Pro · MenDNF—
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Mechelen26 Mar 2026Individual Pro · Men59:19 PB24/457Beat 95%
↑ 64 days after Amsterdam 2026 0:44 better than the field Why ↓Close ↑
0:44 better than the field: 3:03 faster on the clock, against 2:19 faster for everyone.
The fieldCompare these two →2:19 faster This athlete3:03 faster -
Amsterdam21 Jan 2026Doubles Pro · Men56:29 PB5/94Beat 95%
↑ 124 days after Maastricht 2025, with Lloyd Bleeksma 2:22 better than the field Why ↓Close ↑
6:33 faster on the clock, and the race was 4:11 faster for everyone, so 2:22 of it was this pair.
The fieldCompare these two →4:11 faster This pair6:33 faster -
Amsterdam21 Jan 2026Individual Pro · Men1:02:2218/243Beat 93%
↑ 40 days after Gent 2025 2:41 better than the field Why ↓Close ↑
4:12 faster on the clock, and the race was 1:31 faster for everyone, so 2:41 of it was this athlete.
The fieldCompare these two →1:31 faster This athlete4:12 faster -
Gent12 Dec 2025Individual Pro · Men1:06:3445/305Beat 85%
↑ 14 days after Utrecht 2025 3:02 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:03 faster on the clock, yet the race was 3:05 faster for everyone, so 3:02 was lost on the field.
The fieldCompare these two →3:05 faster This athlete0:03 faster -
Utrecht28 Nov 2025Individual Pro · Men1:06:3713/215Beat 94%
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Hamburg2 Oct 2025Individual Open · Men1:01:42 PB6/409Beat 99%
↑ 146 days after Heerenveen 2025 1:47 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:17 faster on the clock looks better than it was: the race was 3:04 faster for everyone, which leaves this 1:47 behind the field.
The fieldCompare these two →3:04 faster This athlete1:17 faster -
Maastricht19 Sep 2025Doubles Pro · Men1:03:0227/131Beat 79%
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Heerenveen9 May 2025Individual Open · Men1:02:5915/1217Beat 99%
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Belgium5 Apr 2025Doubles Pro · Men59:419/122Beat 93%
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Amsterdam10 Oct 2024Doubles Pro · Men1:02:287/34Beat 79%
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Rotterdam6 Apr 2024Doubles Open · Men1:03:16 PB33/722Beat 95%