Progress against the field
From Belgium 2025 to Heerenveen 2026, Arjan Onstwedder got 6:23 faster than the field.
Over the same races everyone got 7:18 quicker, so 13:41 faster on the clock looks better than it was.
The biggest step was Belgium 2025 → Heerenveen 2025: 5:27 on the field in 34 days.
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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Heerenveen14 May 2026Individual Open · Men1:10:02 PB125/966Beat 87%
↑ 370 days after Heerenveen 2025 0:56 better than the field Why ↓Close ↑
0:56 better than the field: 5:46 faster on the clock, against 4:50 faster for everyone.
The fieldCompare these two →4:50 faster This athlete5:46 faster -
Amsterdam21 Jan 2026Doubles Pro · Men1:06:46 PB36/94Beat 62%
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Heerenveen9 May 2025Individual Open · Men1:15:48276/1217Beat 77%
↑ 34 days after Belgium 2025 5:27 better than the field Why ↓Close ↑
5:27 better than the field: 7:55 faster on the clock, against 2:28 faster for everyone.
The fieldCompare these two →2:28 faster This athlete7:55 faster -
Belgium5 Apr 2025Individual Open · Men1:23:43717/1638Beat 56%