Progress against the field
From Amsterdam 2024 to Rotterdam 2026, the field gained 8:28 on Remco Groeneveld and Ronald Boer.
Over the same races everyone got 6:52 quicker, so 1:36 slower on the clock looks better than it was.
The longest gap between two races compared here, 237 days between Belgium 2025 and Utrecht 2025, cost 2:50 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. The summary above covers Doubles Open · Men, with Ronald Boer, the one raced most; every comparison is in the list below.
Every race
20 races · 17 events
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Maastricht19 Sep 2026Individual Open · Men1:13:3257/394Beat 86%
↑ 365 days after Maastricht 2025 10:59 worse than the field Why ↓Close ↑
4:43 slower on the clock in a race that was 6:16 faster for everyone: 10:59 lost to the field.
The fieldCompare these two →6:16 faster This athlete4:43 slower -
Heerenveen14 May 2026Doubles Pro · Men1:04:04 PB91/315Beat 71%
↑ 113 days after Amsterdam 2026, with Ronald Boer 1:21 better than the field Why ↓Close ↑
2:13 faster on the clock, and the race was 0:52 faster for everyone, so 1:21 of it was this pair.
The fieldCompare these two →0:52 faster This pair2:13 faster -
Rotterdam15 Apr 2026Doubles Open · Men1:01:1927/580Beat 95%
↑ 20 days after Mechelen 2026, with Ronald Boer 1:06 worse than the field Why ↓Close ↑
1:06 behind the field: 0:47 slower on the clock, against 0:19 faster for everyone.
The fieldCompare these two →0:19 faster This pair0:47 slower -
Mechelen26 Mar 2026Doubles Open · Men1:00:3253/593Beat 91%
↑ 118 days after Utrecht 2025, with Ronald Boer 1:59 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:35 faster on the clock, yet the race was 3:34 faster for everyone, so 1:59 was lost on the field.
The fieldCompare these two →3:34 faster This pair1:35 faster -
Amsterdam21 Jan 2026Doubles Pro · Men1:06:1733/94Beat 65%
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Amsterdam21 Jan 2026Individual Pro · Men1:15:38114/243Beat 53%
↑ 124 days after Maastricht 2025 0:00 better than the field Why ↓Close ↑
Moved with the field: 6:08 faster on the clock, against 6:08 faster for everyone.
The fieldCompare these two →6:08 faster This athlete6:08 faster -
Gent12 Dec 2025Doubles Open · Men1:07:11255/1164Beat 78%
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Utrecht28 Nov 2025Doubles Open · Men1:02:0758/879Beat 93%
↑ 237 days after Belgium 2025, with Ronald Boer 2:50 worse than the field Why ↓Close ↑
2:46 slower on the clock in a race that was 0:04 faster for everyone: 2:50 lost to the field.
The fieldCompare these two →0:04 faster This pair2:46 slower -
Maastricht19 Sep 2025Individual Open · Men1:08:49 PB25/584Beat 96%
↑ 685 days after Amsterdam 2023 4:24 better than the field Why ↓Close ↑
4:55 faster on the clock, and the race was 0:31 faster for everyone, so 4:24 of it was this athlete.
The fieldCompare these two →0:31 faster This athlete4:55 faster -
Maastricht19 Sep 2025Individual Pro · Men1:21:4695/208Beat 54%
↑ 133 days after Heerenveen 2025 2:30 worse than the field Why ↓Close ↑
2:30 behind the field: 6:35 slower on the clock, against 4:05 slower for everyone.
The fieldCompare these two →4:05 slower This athlete6:35 slower -
Heerenveen9 May 2025Individual Pro · Men1:15:11 PB56/216Beat 74%
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Belgium5 Apr 2025Doubles Open · Men59:21 PB36/898Beat 96%
↑ 177 days after Amsterdam 2024, with Ronald Boer 2:33 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:22 faster on the clock looks better than it was: the race was 2:55 faster for everyone, which leaves this 2:33 behind the field.
The fieldCompare these two →2:55 faster This pair0:22 faster -
Frankfurt14 Dec 2024Doubles Pro · Men1:05:0942/137Beat 69%
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Amsterdam10 Oct 2024Relay · Men53:182/15Beat 87%
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Amsterdam10 Oct 2024Doubles Open · Men59:4321/855Beat 98%
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Maastricht20 Jan 2024Doubles Pro · Men1:04:137/23Beat 70%
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Amsterdam4 Nov 2023Individual Open · Men1:13:4490/1079Beat 92%
↑ 378 days after Amsterdam 2022 4:49 better than the field Why ↓Close ↑
4:49 better than the field: 7:05 faster on the clock, against 2:16 faster for everyone.
The fieldCompare these two →2:16 faster This athlete7:05 faster -
Maastricht European Championships21 Jan 2023Doubles Open · Men1:06:2244/185Beat 76%
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Amsterdam22 Oct 2022Individual Open · Men1:20:49153/561Beat 73%
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World Championships ManchesterDate unknownDoubles Open · Men1:10:16218/250Beat 13%