Progress against the field
From Heerenveen 2025 to Heerenveen 2026, Roy Boersma got 2:08 faster than the field.
Over the same races everyone got 4:32 quicker, so 6:40 faster on the clock looks better than it was.
The longest gap between two races compared here, 203 days between Heerenveen 2025 and Utrecht 2025, still ended 2:12 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
7 races · 7 events
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Heerenveen14 May 2026Individual Pro · Men1:08:35 PB95/454Beat 79%
↑ 113 days after Amsterdam 2026 1:16 better than the field Why ↓Close ↑
1:16 better than the field: 2:48 faster on the clock, against 1:32 faster for everyone.
The fieldCompare these two →1:32 faster This athlete2:48 faster -
Rotterdam15 Apr 2026Doubles Pro · Men1:00:31 PB75/385Beat 81%
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Amsterdam21 Jan 2026Individual Pro · Men1:11:2381/243Beat 67%
↑ 54 days after Utrecht 2025 1:20 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:16 faster on the clock, yet the race was 4:36 faster for everyone, so 1:20 was lost on the field.
The fieldCompare these two →4:36 faster This athlete3:16 faster -
Utrecht28 Nov 2025Individual Pro · Men1:14:3947/215Beat 78%
↑ 203 days after Heerenveen 2025 2:12 better than the field Why ↓Close ↑
The race was 1:36 slower for everyone and the clock still says 0:36 faster: 2:12 gained on the field.
The fieldCompare these two →1:36 slower This athlete0:36 faster -
Heerenveen9 May 2025Individual Pro · Men1:15:1557/216Beat 74%
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Rotterdam6 Apr 2024Doubles Pro · Men1:15:2058/101Beat 43%
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Amsterdam4 Nov 2023Individual Pro · Men1:22:3938/102Beat 63%