Progress against the field
Sven Walleze has dropped 0:42 behind the field from Amsterdam 2023 to Heerenveen 2026.
The clock says 12:27 faster, but the races themselves got 13:09 quicker for everyone.
768 days between Rotterdam 2024 and Heerenveen 2026 is the longest gap compared here, and the second race was 3:11 behind 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Heerenveen14 May 2026Individual Open · Men1:21:16 PB400/966Beat 59%
↑ 768 days after Rotterdam 2024 3:11 worse than the field Faster on the clock, behind the field Why ↓Close ↑
7:28 faster on the clock looks better than it was: the race was 10:39 faster for everyone, which leaves this 3:11 behind the field.
The fieldCompare these two →10:39 faster This athlete7:28 faster -
Gent12 Dec 2025Doubles Open · Mixed1:37:36 PB189/218Beat 13%
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Belgium5 Apr 2025Individual Pro · Men1:35:48 PB185/203Beat 9%
↑ 177 days after Amsterdam 2024 1:46 better than the field Why ↓Close ↑
3:47 faster on the clock, and the race was 2:01 faster for everyone, so 1:46 of it was this athlete.
The fieldCompare these two →2:01 faster This athlete3:47 faster -
Amsterdam10 Oct 2024Individual Pro · Men1:39:35155/177Beat 12%
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Rotterdam6 Apr 2024Individual Open · Men1:28:44572/1380Beat 59%
↑ 154 days after Amsterdam 2023 2:29 better than the field Why ↓Close ↑
2:29 better than the field: 4:59 faster on the clock, against 2:30 faster for everyone.
The fieldCompare these two →2:30 faster This athlete4:59 faster -
Amsterdam4 Nov 2023Individual Open · Men1:33:43657/1079Beat 39%