Progress against the field
Between Rotterdam 2024 and Rotterdam 2026, Sander van der Wilk pulled 31:15 ahead of the field.
Over the same races everyone got 12:41 quicker, so 43:56 faster on the clock looks better than it was.
327 days between Rotterdam 2024 and Rotterdam 2025 is the longest gap compared here, and the second race was 36:27 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
5 races · 5 events
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Rotterdam15 Apr 2026Individual Open · Men1:19:07348/1192Beat 71%
↑ 138 days after Utrecht 2025 5:40 worse than the field Why ↓Close ↑
0:21 slower on the clock in a race that was 5:19 faster for everyone: 5:40 lost to the field.
The fieldCompare these two →5:19 faster This athlete0:21 slower -
Utrecht28 Nov 2025Individual Open · Men1:18:46 PB295/1337Beat 78%
↑ 274 days after Rotterdam 2025 0:28 better than the field Why ↓Close ↑
1:16 faster on the clock, and the race was 0:48 faster for everyone, so 0:28 of it was this athlete.
The fieldCompare these two →0:48 faster This athlete1:16 faster -
Belgium5 Apr 2025Doubles Open · Men1:06:18 PB171/898Beat 81%
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Rotterdam27 Feb 2025Individual Open · Men1:20:02399/1283Beat 69%
↑ 327 days after Rotterdam 2024 36:27 better than the field Why ↓Close ↑
43:01 faster on the clock, and the race was 6:34 faster for everyone, so 36:27 of it was this athlete.
The fieldCompare these two →6:34 faster This athlete43:01 faster -
Rotterdam6 Apr 2024Individual Open · Men2:03:031311/1380Beat 5%