Progress against the field
Between Maastricht 2025 and Heerenveen 2026, Adriaan Groffen and Niels Boelens lost 1:54 to the field.
Over the same races everyone got 5:04 quicker, so 3:10 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.
Every race
5 races · 4 events
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Heerenveen14 May 2026Doubles Open · Mixed1:15:41 PB266/808Beat 67%
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Heerenveen14 May 2026Doubles Pro · Men1:06:12 PB115/315Beat 64%
↑ 167 days after Utrecht 2025, with Niels Boelens 1:55 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:42 faster on the clock looks better than it was: the race was 3:37 faster for everyone, which leaves this 1:55 behind the field.
The fieldCompare these two →3:37 faster This pair1:42 faster -
Utrecht28 Nov 2025Doubles Pro · Men1:07:5440/148Beat 73%
↑ 70 days after Maastricht 2025, with Niels Boelens 0:01 better than the field Why ↓Close ↑
1:28 faster on the clock, and the race was 1:27 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →1:27 faster This pair1:28 faster -
Maastricht19 Sep 2025Doubles Pro · Men1:09:2252/131Beat 60%
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Rotterdam6 Apr 2024Doubles Open · Men1:04:09 PB44/722Beat 94%