Progress against the field
From Amsterdam 2023 to Hamburg 2026, the field gained 5:32 on Jacco Feenstra.
The clock says 8:33 faster, but the races themselves got 14:05 quicker for everyone.
The longest gap between two races compared here, 552 days between Amsterdam 2023 and Heerenveen 2025, still ended 1:14 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
5 races · 5 events
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Hamburg28 Oct 2026Individual Open · Men1:22:19 PB126/432Beat 71%
↑ 167 days after Heerenveen 2026 0:47 better than the field Why ↓Close ↑
1:26 faster on the clock, and the race was 0:39 faster for everyone, so 0:47 of it was this athlete.
The fieldCompare these two →0:39 faster This athlete1:26 faster -
Heerenveen14 May 2026Individual Open · Men1:23:45461/966Beat 52%
↑ 113 days after Amsterdam 2026 3:19 worse than the field Why ↓Close ↑
0:46 slower on the clock in a race that was 2:33 faster for everyone: 3:19 lost to the field.
The fieldCompare these two →2:33 faster This athlete0:46 slower -
Amsterdam21 Jan 2026Individual Open · Men1:22:59778/1620Beat 52%
↑ 257 days after Heerenveen 2025 4:14 worse than the field Why ↓Close ↑
0:07 slower on the clock in a race that was 4:07 faster for everyone: 4:14 lost to the field.
The fieldCompare these two →4:07 faster This athlete0:07 slower -
Heerenveen9 May 2025Individual Open · Men1:22:52524/1217Beat 57%
↑ 552 days after Amsterdam 2023 1:14 better than the field Why ↓Close ↑
1:14 better than the field: 8:00 faster on the clock, against 6:46 faster for everyone.
The fieldCompare these two →6:46 faster This athlete8:00 faster -
Amsterdam4 Nov 2023Individual Open · Men1:30:52581/1079Beat 46%