Progress against the field
From Amsterdam 2023 to Rotterdam 2026, Romy Alberda got 20:11 faster than the field.
Over the same races everyone got 14:33 quicker, so 34:44 faster on the clock looks better than it was.
288 days between Rotterdam 2025 and Gent 2025 is the longest gap compared here, and the second race was 9:14 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
8 races · 8 events
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Rotterdam15 Apr 2026Individual Open · Women1:32:54 PB169/485Beat 65%
↑ 124 days after Gent 2025 1:07 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:57 faster on the clock, yet the race was 2:04 faster for everyone, so 1:07 was lost on the field.
The fieldCompare these two →2:04 faster This athlete0:57 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:26:07866/1206Beat 28%
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Gent12 Dec 2025Individual Open · Women1:33:51515/1009Beat 49%
↑ 288 days after Rotterdam 2025 9:14 better than the field Why ↓Close ↑
9:14 better than the field: 11:59 faster on the clock, against 2:45 faster for everyone.
The fieldCompare these two →2:45 faster This athlete11:59 faster -
Heerenveen9 May 2025Doubles Open · Mixed1:22:39 PB278/492Beat 44%
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Rotterdam27 Feb 2025Individual Open · Women1:45:50380/506Beat 25%
↑ 140 days after Amsterdam 2024 5:56 worse than the field Why ↓Close ↑
5:56 behind the field: 3:07 slower on the clock, against 2:49 faster for everyone.
The fieldCompare these two →2:49 faster This athlete3:07 slower -
Amsterdam10 Oct 2024Individual Open · Women1:42:43477/678Beat 30%
↑ 187 days after Rotterdam 2024 6:35 worse than the field Why ↓Close ↑
6:35 behind the field: 4:53 slower on the clock, against 1:42 faster for everyone.
The fieldCompare these two →1:42 faster This athlete4:53 slower -
Rotterdam6 Apr 2024Individual Open · Women1:37:50351/585Beat 40%
↑ 154 days after Amsterdam 2023 24:35 better than the field Why ↓Close ↑
29:48 faster on the clock, and the race was 5:13 faster for everyone, so 24:35 of it was this athlete.
The fieldCompare these two →5:13 faster This athlete29:48 faster -
Amsterdam4 Nov 2023Individual Open · Women2:07:38373/394Beat 5%