Progress against the field
Between Amsterdam 2023 and Heerenveen 2025, Coen Van Amersfoort pulled 16:11 ahead of the field.
Over the same races everyone got 9:09 quicker, so 25:20 faster on the clock looks better than it was.
The longest gap between two races compared here, 341 days between Amsterdam 2023 and Amsterdam 2024, still ended 23:05 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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Utrecht28 Nov 2025Doubles Open · Men1:22:45 PB676/879Beat 23%
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Heerenveen9 May 2025Individual Open · Men1:35:55937/1217Beat 23%
↑ 211 days after Amsterdam 2024 6:54 worse than the field Why ↓Close ↑
6:54 behind the field: 4:14 slower on the clock, against 2:40 faster for everyone.
The fieldCompare these two →2:40 faster This athlete4:14 slower -
Amsterdam10 Oct 2024Individual Open · Men1:31:41 PB1004/1539Beat 35%
↑ 341 days after Amsterdam 2023 23:05 better than the field Why ↓Close ↑
23:05 better than the field: 29:34 faster on the clock, against 6:29 faster for everyone.
The fieldCompare these two →6:29 faster This athlete29:34 faster -
Amsterdam4 Nov 2023Individual Open · Men2:01:151033/1079Beat 4%