Progress against the field
Between Heerenveen 2025 and Maastricht 2026, Arjan Althuis pulled 1:22 ahead of the field.
Over the same races everyone got 5:32 quicker, so 6:54 faster on the clock looks better than it was.
203 days between Heerenveen 2025 and Utrecht 2025 is the longest gap compared here, and the second race was 1:50 better than 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
4 races · 4 events
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Maastricht19 Sep 2026Individual Open · Men1:29:16 PB295/546Beat 46%
↑ 157 days after Rotterdam 2026 8:26 better than the field Why ↓Close ↑
8:32 faster on the clock, and the race was 0:06 faster for everyone, so 8:26 of it was this athlete.
The fieldCompare these two →0:06 faster This athlete8:32 faster -
Rotterdam15 Apr 2026Individual Open · Men1:37:48415/570Beat 27%
↑ 138 days after Utrecht 2025 8:54 worse than the field Why ↓Close ↑
8:54 behind the field: 3:35 slower on the clock, against 5:19 faster for everyone.
The fieldCompare these two →5:19 faster This athlete3:35 slower -
Utrecht28 Nov 2025Individual Open · Men1:34:13866/1337Beat 35%
↑ 203 days after Heerenveen 2025 1:50 better than the field Why ↓Close ↑
1:57 faster on the clock, and the race was 0:07 faster for everyone, so 1:50 of it was this athlete.
The fieldCompare these two →0:07 faster This athlete1:57 faster -
Heerenveen9 May 2025Individual Open · Men1:36:10943/1217Beat 23%