Progress against the field
Between Rotterdam 2024 and Amsterdam 2026, Wilbert Jansen lost 7:10 to the field.
Over the same races everyone got 10:59 quicker, so 3:49 faster on the clock looks better than it was.
468 days between Amsterdam 2024 and Amsterdam 2026 is the longest gap compared here, and the second race was 3:55 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
10 races · 10 events
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Stockholm18 Jun 2026Doubles Pro · Men54:5788/704Beat 88%
↑ 35 days after Heerenveen 2026, with Julian Bosch 2:03 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
0:17 slower on the clock, but the race was 2:20 slower for everyone, so this was 2:03 better than the field.
The fieldCompare these two →2:20 slower This pair0:17 slower -
Heerenveen14 May 2026Doubles Pro · Men54:40 PB9/315Beat 97%
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Amsterdam21 Jan 2026Individual Open · Men57:58 PB1/608Beat 100%
↑ 468 days after Amsterdam 2024 3:55 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:17 faster on the clock, yet the race was 4:12 faster for everyone, so 3:55 was lost on the field.
The fieldCompare these two →4:12 faster This athlete0:17 faster -
Utrecht28 Nov 2025Individual Pro · Men1:08:5622/215Beat 90%
↑ 70 days after Maastricht 2025 0:05 better than the field Why ↓Close ↑
Moved with the field: 1:28 faster on the clock, against 1:23 faster for everyone.
The fieldCompare these two →1:23 faster This athlete1:28 faster -
Maastricht19 Sep 2025Individual Pro · Men1:10:2442/208Beat 80%
↑ 133 days after Heerenveen 2025 5:12 better than the field Why ↓Close ↑
1:07 faster on the clock in a race that was 4:05 slower for everyone: 5:12 better than the field.
The fieldCompare these two →4:05 slower This athlete1:07 faster -
Heerenveen9 May 2025Individual Pro · Men1:11:3140/216Beat 82%
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Amsterdam10 Oct 2024Individual Open · Men58:155/1539Beat 100%
↑ 187 days after Rotterdam 2024 3:15 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:32 faster on the clock, yet the race was 6:47 faster for everyone, so 3:15 was lost on the field.
The fieldCompare these two →6:47 faster This athlete3:32 faster -
Rotterdam6 Apr 2024Individual Open · Men1:01:474/1380Beat 100%
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Amsterdam4 Nov 2023Doubles Open · Men1:29:13 PB336/411Beat 18%
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World Championships NiceDate unknownIndividual Pro · Men1:06:51 PB143/830Beat 83%