Progress against the field
Between Rotterdam 2023 and Rotterdam 2026, Ruben Oerlemans lost 7:44 to the field.
Over the same races everyone got 16:52 quicker, so 9:08 faster on the clock looks better than it was.
The longest gap between two races compared here, 364 days between Rotterdam 2024 and Belgium 2025, still ended 3:53 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
8 races · 8 events
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Rotterdam15 Apr 2026Individual Open · Men1:17:55152/556Beat 73%
↑ 124 days after Gent 2025 8:35 worse than the field Why ↓Close ↑
4:37 slower on the clock in a race that was 3:58 faster for everyone: 8:35 lost to the field.
The fieldCompare these two →3:58 faster This athlete4:37 slower -
Gent12 Dec 2025Individual Open · Men1:13:18 PB234/1428Beat 84%
↑ 251 days after Belgium 2025 0:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:38 faster on the clock, yet the race was 2:51 faster for everyone, so 0:13 was lost on the field.
The fieldCompare these two →2:51 faster This athlete2:38 faster -
Utrecht28 Nov 2025Doubles Pro · Men1:13:4679/148Beat 47%
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Heerenveen9 May 2025Doubles Pro · Men1:07:54 PB38/92Beat 59%
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Belgium5 Apr 2025Individual Open · Men1:15:56368/1638Beat 78%
↑ 364 days after Rotterdam 2024 3:53 better than the field Why ↓Close ↑
3:53 better than the field: 10:53 faster on the clock, against 7:00 faster for everyone.
The fieldCompare these two →7:00 faster This athlete10:53 faster -
Rotterdam27 Feb 2025Doubles Open · Mixed1:47:13 PB212/220Beat 4%
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Rotterdam6 Apr 2024Individual Open · Men1:26:49485/1380Beat 65%
↑ 322 days after Rotterdam 2023 2:49 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:14 faster on the clock looks better than it was: the race was 3:03 faster for everyone, which leaves this 2:49 behind the field.
The fieldCompare these two →3:03 faster This athlete0:14 faster -
Rotterdam20 May 2023Individual Open · Men1:27:03260/575Beat 55%