Progress against the field
Between Amsterdam 2023 and Rotterdam 2026, Twan Zwaan kept pace with the field.
Over the same races everyone got 13:12 quicker, so 13:22 faster on the clock looks better than it was.
412 days between Rotterdam 2025 and Rotterdam 2026 is the longest gap compared here, and the second race was 1:54 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.
Every race
6 races · 6 events
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Rotterdam15 Apr 2026Individual Open · Men1:21:43 PB202/570Beat 65%
↑ 412 days after Rotterdam 2025 1:54 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:14 faster on the clock, yet the race was 4:08 faster for everyone, so 1:54 was lost on the field.
The fieldCompare these two →4:08 faster This athlete2:14 faster -
Utrecht28 Nov 2025Individual Pro · Men1:43:16 PB191/215Beat 11%
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Rotterdam27 Feb 2025Individual Open · Men1:23:57242/584Beat 59%
↑ 327 days after Rotterdam 2024 1:16 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:18 faster on the clock looks better than it was: the race was 6:34 faster for everyone, which leaves this 1:16 behind the field.
The fieldCompare these two →6:34 faster This athlete5:18 faster -
Amsterdam10 Oct 2024Doubles Pro · Men1:17:43 PB96/144Beat 33%
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Rotterdam6 Apr 2024Individual Open · Men1:29:15593/1380Beat 57%
↑ 154 days after Amsterdam 2023 3:20 better than the field Why ↓Close ↑
5:50 faster on the clock, and the race was 2:30 faster for everyone, so 3:20 of it was this athlete.
The fieldCompare these two →2:30 faster This athlete5:50 faster -
Amsterdam4 Nov 2023Individual Open · Men1:35:05711/1079Beat 34%