Progress against the field
From Rotterdam 2024 to Rotterdam 2026, the field gained 5:51 on Thomas Bosman and Barbara De grouw.
Over the same races everyone got 6:48 quicker, so 0:57 faster on the clock looks better than it was.
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 · Mixed, with Barbara De grouw, the one raced most; every comparison is in the list below.
Every race
8 races · 8 events
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Heerenveen14 May 2026Doubles Open · Men1:03:46 PB67/535Beat 88%
↑ 370 days after Heerenveen 2025, with Rick Oud 1:05 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:41 faster on the clock looks better than it was: the race was 2:46 faster for everyone, which leaves this 1:05 behind the field.
The fieldCompare these two →2:46 faster This pair1:41 faster -
Rotterdam15 Apr 2026Doubles Open · Mixed1:08:3642/560Beat 93%
↑ 84 days after Amsterdam 2026, with Barbara De grouw 8:10 worse than the field Why ↓Close ↑
8:10 behind the field: 7:20 slower on the clock, against 0:50 faster for everyone.
The fieldCompare these two →0:50 faster This pair7:20 slower -
Amsterdam21 Jan 2026Doubles Open · Mixed1:01:16 PB53/1206Beat 96%
↑ 468 days after Amsterdam 2024, with Barbara De grouw 0:37 better than the field Why ↓Close ↑
0:37 better than the field: 4:34 faster on the clock, against 3:57 faster for everyone.
The fieldCompare these two →3:57 faster This pair4:34 faster -
Utrecht28 Nov 2025Individual Open · Men1:11:05 PB79/1337Beat 94%
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Heerenveen9 May 2025Doubles Open · Men1:05:2737/309Beat 88%
↑ 71 days after Rotterdam 2025, with Rick Oud 1:21 better than the field Why ↓Close ↑
1:21 better than the field: 2:54 faster on the clock, against 1:33 faster for everyone.
The fieldCompare these two →1:33 faster This pair2:54 faster -
Rotterdam27 Feb 2025Doubles Open · Men1:08:21142/733Beat 81%
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Amsterdam10 Oct 2024Doubles Open · Mixed1:05:5024/376Beat 94%
↑ 187 days after Rotterdam 2024, with Barbara De grouw 1:42 better than the field Why ↓Close ↑
3:43 faster on the clock, and the race was 2:01 faster for everyone, so 1:42 of it was this pair.
The fieldCompare these two →2:01 faster This pair3:43 faster -
Rotterdam6 Apr 2024Doubles Open · Mixed1:09:3355/534Beat 90%