Progress against the field
Jaap Bijsterbosch has dropped 10:44 behind the field from Amsterdam 2023 to Heerenveen 2026.
The clock says 2:25 faster, but the races themselves got 13:09 quicker for everyone.
The longest gap between two races compared here, 768 days between Rotterdam 2024 and Heerenveen 2026, cost 6:52 on 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.
Every race
6 races · 6 events
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Maastricht19 Sep 2026Doubles Open · Men1:19:15 PB167/239Beat 30%
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Heerenveen14 May 2026Individual Open · Men1:16:34 PB272/966Beat 72%
↑ 768 days after Rotterdam 2024 6:52 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:47 faster on the clock looks better than it was: the race was 10:39 faster for everyone, which leaves this 6:52 behind the field.
The fieldCompare these two →10:39 faster This athlete3:47 faster -
Utrecht28 Nov 2025Individual Pro · Men1:26:50 PB115/215Beat 47%
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Belgium5 Apr 2025Doubles Open · Mixed1:19:00 PB312/722Beat 57%
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Rotterdam6 Apr 2024Individual Open · Men1:20:21250/1380Beat 82%
↑ 154 days after Amsterdam 2023 3:52 worse than the field Why ↓Close ↑
3:52 behind the field: 1:22 slower on the clock, against 2:30 faster for everyone.
The fieldCompare these two →2:30 faster This athlete1:22 slower -
Amsterdam4 Nov 2023Individual Open · Men1:18:59197/1079Beat 82%