Progress against the field
Between Rotterdam 2023 and Utrecht 2025, Jeffrey Van Der Harst pulled 1:13 ahead of the field.
The clock says 6:31 faster, but the races themselves got 5:18 quicker for everyone.
The longest gap between two races compared here, 678 days between Maastricht 2024 and Utrecht 2025, still ended 2:06 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Utrecht28 Nov 2025Individual Open · Men1:15:52 PB94/575Beat 84%
↑ 678 days after Maastricht 2024 2:06 better than the field Why ↓Close ↑
2:06 better than the field: 4:01 faster on the clock, against 1:55 faster for everyone.
The fieldCompare these two →1:55 faster This athlete4:01 faster -
Maastricht20 Jan 2024Individual Open · Men1:19:53244/781Beat 69%
↑ 245 days after Rotterdam 2023 0:53 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:30 faster on the clock looks better than it was: the race was 3:23 faster for everyone, which leaves this 0:53 behind the field.
The fieldCompare these two →3:23 faster This athlete2:30 faster -
Amsterdam4 Nov 2023Doubles Open · Mixed1:28:51 PB197/283Beat 30%
↑ 378 days after Amsterdam 2022, with Rowena Den Heijer 7:15 better than the field Why ↓Close ↑
7:15 better than the field: 7:51 faster on the clock, against 0:36 faster for everyone.
The fieldCompare these two →0:36 faster This pair7:51 faster -
Rotterdam20 May 2023Individual Open · Men1:22:23183/575Beat 68%
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Amsterdam22 Oct 2022Doubles Open · Mixed1:36:42156/170Beat 8%