Progress against the field
Between Rotterdam 2024 and Maastricht 2025, Jeroen Arentshorst lost 0:31 to the field.
The clock says 5:45 faster, but the races themselves got 6:16 quicker for everyone.
The longest gap between two races compared here, 344 days between Amsterdam 2024 and Maastricht 2025, still ended 9:17 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
6 races · 6 events
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Sydney1 Jul 2026Individual Open · Men1:25:05771/1581Beat 51%
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Amsterdam21 Jan 2026Doubles Open · Men1:13:59 PB172/344Beat 50%
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Utrecht28 Nov 2025Individual Pro · Men1:29:51 PB62/102Beat 39%
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Maastricht19 Sep 2025Individual Open · Men1:22:41 PB417/1352Beat 69%
↑ 344 days after Amsterdam 2024 9:17 better than the field Why ↓Close ↑
8:46 faster on the clock in a race that was 0:31 slower for everyone: 9:17 better than the field.
The fieldCompare these two →0:31 slower This athlete8:46 faster -
Amsterdam10 Oct 2024Individual Open · Men1:31:27994/1539Beat 35%
↑ 187 days after Rotterdam 2024 9:48 worse than the field Why ↓Close ↑
9:48 behind the field: 3:01 slower on the clock, against 6:47 faster for everyone.
The fieldCompare these two →6:47 faster This athlete3:01 slower -
Rotterdam6 Apr 2024Individual Open · Men1:28:26556/1380Beat 60%