Progress against the field
Between Amsterdam 2023 and Heerenveen 2026, Channah Glazenburg and Christianne Glazenburg lost 5:42 to the field.
The clock says 5:38 faster, but the races themselves got 11:20 quicker for everyone.
531 days between Rotterdam 2024 and Maastricht 2025 is the longest gap compared here, and the second race was 4:17 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
5 races · 5 events
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Heerenveen14 May 2026Doubles Open · Women1:20:03 PB165/513Beat 68%
↑ 237 days after Maastricht 2025, with Christianne Glazenburg 2:41 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:07 faster on the clock, yet the race was 3:48 faster for everyone, so 2:41 was lost on the field.
The fieldCompare these two →3:48 faster This pair1:07 faster -
Utrecht28 Nov 2025Doubles Open · Women1:24:51332/828Beat 60%
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Maastricht19 Sep 2025Doubles Open · Women1:21:1077/329Beat 77%
↑ 531 days after Rotterdam 2024, with Christianne Glazenburg 4:17 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:24 faster on the clock looks better than it was: the race was 5:41 faster for everyone, which leaves this 4:17 behind the field.
The fieldCompare these two →5:41 faster This pair1:24 faster -
Rotterdam6 Apr 2024Doubles Open · Women1:22:34155/564Beat 73%
↑ 154 days after Amsterdam 2023, with Christianne Glazenburg 1:16 better than the field Why ↓Close ↑
3:07 faster on the clock, and the race was 1:51 faster for everyone, so 1:16 of it was this pair.
The fieldCompare these two →1:51 faster This pair3:07 faster -
Amsterdam4 Nov 2023Doubles Open · Women1:25:41139/319Beat 56%