Progress against the field
Between Amsterdam 2023 and Rotterdam 2025, Tijmen Kooij lost 7:05 to the field.
Over the same races everyone got 9:19 quicker, so 2:14 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, cost 1:13 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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Amsterdam21 Jan 2026Individual Open · Men1:12:24 PB76/570Beat 87%
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Rotterdam27 Feb 2025Individual Pro · Men1:19:2056/196Beat 71%
↑ 140 days after Amsterdam 2024 5:52 worse than the field Why ↓Close ↑
5:52 behind the field: 3:55 slower on the clock, against 1:57 faster for everyone.
The fieldCompare these two →1:57 faster This athlete3:55 slower -
Amsterdam10 Oct 2024Individual Pro · Men1:15:25 PB39/177Beat 78%
↑ 341 days after Amsterdam 2023 1:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
6:09 faster on the clock, yet the race was 7:22 faster for everyone, so 1:13 was lost on the field.
The fieldCompare these two →7:22 faster This athlete6:09 faster -
Amsterdam4 Nov 2023Individual Pro · Men1:21:3433/102Beat 68%