Progress against the field
Between Heerenveen 2025 and Maastricht 2026, Marcella Groeneveld lost 6:50 to the field.
Over the same races everyone got 4:05 quicker, so 2:45 slower on the clock looks better than it was.
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 · Women, the one raced most; every comparison is in the list below.
Every race
8 races · 8 events
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Maastricht19 Sep 2026Individual Open · Women1:17:1642/577Beat 93%
↑ 128 days after Heerenveen 2026 2:53 worse than the field Why ↓Close ↑
4:30 slower on the clock in a race that was 1:37 slower for everyone: 2:53 lost to the field.
The fieldCompare these two →1:37 slower This athlete4:30 slower -
Heerenveen14 May 2026Individual Open · Women1:12:46 PB12/427Beat 97%
↑ 167 days after Utrecht 2025 3:14 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:29 faster on the clock, yet the race was 3:43 faster for everyone, so 3:14 was lost on the field.
The fieldCompare these two →3:43 faster This athlete0:29 faster -
Rotterdam15 Apr 2026Doubles Open · Women1:06:533/472Beat 99%
↑ 84 days after Amsterdam 2026, with Pascalle De Vries 6:09 better than the field Why ↓Close ↑
7:09 faster on the clock, and the race was 1:00 faster for everyone, so 6:09 of it was this pair.
The fieldCompare these two →1:00 faster This pair7:09 faster -
Mechelen26 Mar 2026Doubles Open · Women1:06:27 PB8/285Beat 97%
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Amsterdam21 Jan 2026Doubles Open · Women1:14:0231/297Beat 90%
↑ 124 days after Maastricht 2025, with Pascalle De Vries 8:29 worse than the field Why ↓Close ↑
8:29 behind the field: 4:39 slower on the clock, against 3:50 faster for everyone.
The fieldCompare these two →3:50 faster This pair4:39 slower -
Utrecht28 Nov 2025Individual Open · Women1:13:1519/619Beat 97%
↑ 203 days after Heerenveen 2025 0:43 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:16 faster on the clock looks better than it was: the race was 1:59 faster for everyone, which leaves this 0:43 behind the field.
The fieldCompare these two →1:59 faster This athlete1:16 faster -
Maastricht19 Sep 2025Doubles Open · Women1:09:237/329Beat 98%
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Heerenveen9 May 2025Individual Open · Women1:14:3122/571Beat 96%