Progress against the field
From Rotterdam 2025 to Heerenveen 2026, the field gained 10:06 on Hans van Kleef.
Over the same races everyone got 8:18 quicker, so 1:48 slower on the clock looks better than it was.
The longest gap between two races compared here, 328 days between Rotterdam 2025 and Amsterdam 2026, cost 16:27 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
4 races · 4 events
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Heerenveen14 May 2026Individual Open · Men1:39:23274/315Beat 13%
↑ 29 days after Rotterdam 2026 5:36 better than the field Why ↓Close ↑
5:36 better than the field: 7:23 faster on the clock, against 1:47 faster for everyone.
The fieldCompare these two →1:47 faster This athlete7:23 faster -
Rotterdam15 Apr 2026Individual Open · Men1:46:46484/570Beat 15%
↑ 84 days after Amsterdam 2026 0:45 better than the field Why ↓Close ↑
2:53 faster on the clock, and the race was 2:08 faster for everyone, so 0:45 of it was this athlete.
The fieldCompare these two →2:08 faster This athlete2:53 faster -
Amsterdam21 Jan 2026Individual Open · Men1:49:391505/1620Beat 7%
↑ 328 days after Rotterdam 2025 16:27 worse than the field Why ↓Close ↑
16:27 behind the field: 12:04 slower on the clock, against 4:23 faster for everyone.
The fieldCompare these two →4:23 faster This athlete12:04 slower -
Rotterdam27 Feb 2025Individual Open · Men1:37:35 PB468/600Beat 22%