Progress against the field
Gert-Jan Bos has gained 0:49 on the field from Amsterdam 2024 to Heerenveen 2026.
The clock says 8:04 faster, but the races themselves got 7:15 quicker for everyone.
441 days between Rotterdam 2025 and Heerenveen 2026 is the longest gap compared here, and the second race was 6:46 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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Heerenveen14 May 2026Individual Open · Men1:42:04 PB286/315Beat 9%
↑ 441 days after Rotterdam 2025 6:46 better than the field Why ↓Close ↑
6:46 better than the field: 12:05 faster on the clock, against 5:19 faster for everyone.
The fieldCompare these two →5:19 faster This athlete12:05 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:22:14 PB251/496Beat 49%
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Rotterdam27 Feb 2025Individual Open · Men1:54:091203/1283Beat 6%
↑ 140 days after Amsterdam 2024 5:57 worse than the field Why ↓Close ↑
5:57 behind the field: 4:01 slower on the clock, against 1:56 faster for everyone.
The fieldCompare these two →1:56 faster This athlete4:01 slower -
Amsterdam10 Oct 2024Individual Open · Men1:50:081412/1539Beat 8%