Progress against the field
Johan Bos has dropped 0:17 behind the field from Heerenveen 2025 to Amsterdam 2026.
The clock says 4:57 faster, but the races themselves got 5:14 quicker for everyone.
The longest gap between two races compared here, 203 days between Heerenveen 2025 and Utrecht 2025, still ended 2:34 ahead of 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
4 races · 4 events
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Heerenveen14 May 2026Doubles Open · Men1:09:22 PB135/434Beat 69%
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Amsterdam21 Jan 2026Individual Open · Men1:14:50 PB354/1620Beat 78%
↑ 54 days after Utrecht 2025 2:51 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:16 faster on the clock looks better than it was: the race was 5:07 faster for everyone, which leaves this 2:51 behind the field.
The fieldCompare these two →5:07 faster This athlete2:16 faster -
Utrecht28 Nov 2025Individual Open · Men1:17:06242/1337Beat 82%
↑ 203 days after Heerenveen 2025 2:34 better than the field Why ↓Close ↑
2:41 faster on the clock, and the race was 0:07 faster for everyone, so 2:34 of it was this athlete.
The fieldCompare these two →0:07 faster This athlete2:41 faster -
Heerenveen9 May 2025Individual Open · Men1:19:47397/1217Beat 67%