Progress against the field
Between Rotterdam 2024 and Utrecht 2025, Johan Van Der Westhuyzen pulled 11:54 ahead of the field.
The clock says 20:20 faster, but the races themselves got 8:26 quicker for everyone.
The longest gap between two races compared here, 398 days between Rotterdam 2024 and Heerenveen 2025, still ended 17:11 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
4 races · 4 events
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Utrecht28 Nov 2025Individual Open · Men1:54:311214/1337Beat 9%
↑ 203 days after Heerenveen 2025 5:17 worse than the field Why ↓Close ↑
5:17 behind the field: 5:10 slower on the clock, against 0:07 faster for everyone.
The fieldCompare these two →0:07 faster This athlete5:10 slower -
Heerenveen9 May 2025Individual Open · Men1:49:21 PB1125/1217Beat 8%
↑ 398 days after Rotterdam 2024 17:11 better than the field Why ↓Close ↑
17:11 better than the field: 25:30 faster on the clock, against 8:19 faster for everyone.
The fieldCompare these two →8:19 faster This athlete25:30 faster -
Amsterdam10 Oct 2024Doubles Open · Mixed1:22:46 PB348/618Beat 44%
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Rotterdam6 Apr 2024Individual Open · Men2:14:511355/1380Beat 2%