Progress against the field
Sarah Alders-Wiebers has gained 3:00 on the field from Maastricht 2025 to Rotterdam 2026.
Over the same races everyone got 8:05 quicker, so 11:05 faster on the clock looks better than it was.
The biggest step was Maastricht 2025 → Amsterdam 2026: 2:32 on the field in 124 days.
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
9 races · 7 events
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Maastricht19 Sep 2026Individual Pro · Women1:07:41 PB11/160Beat 93%
↑ 157 days after Rotterdam 2026 1:59 better than the field Why ↓Close ↑
1:59 better than the field: 2:10 faster on the clock, against 0:11 faster for everyone.
The fieldCompare these two →0:11 faster This athlete2:10 faster -
Heerenveen14 May 2026Doubles Open · Women1:00:22 PB1/246Beat 100%
↑ 29 days after Rotterdam 2026, with Liselot Tensen 3:11 better than the field Why ↓Close ↑
6:25 faster on the clock, and the race was 3:14 faster for everyone, so 3:11 of it was this pair.
The fieldCompare these two →3:14 faster This pair6:25 faster -
Rotterdam15 Apr 2026Doubles Open · Women1:06:472/466Beat 100%
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Rotterdam15 Apr 2026Individual Open · Women1:05:131/695Beat 100%
↑ 20 days after Mechelen 2026 0:22 worse than the field Why ↓Close ↑
0:22 behind the field: 0:30 slower on the clock, against 0:08 slower for everyone.
The fieldCompare these two →0:08 slower This athlete0:30 slower -
Rotterdam15 Apr 2026Individual Pro · Women1:09:5111/128Beat 91%
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Mechelen26 Mar 2026Individual Open · Women1:04:43 PB3/776Beat 100%
↑ 64 days after Amsterdam 2026 0:50 better than the field Why ↓Close ↑
2:08 faster on the clock, and the race was 1:18 faster for everyone, so 0:50 of it was this athlete.
The fieldCompare these two →1:18 faster This athlete2:08 faster -
Amsterdam21 Jan 2026Individual Open · Women1:06:518/1122Beat 99%
↑ 124 days after Maastricht 2025 2:32 better than the field Why ↓Close ↑
2:32 better than the field: 9:27 faster on the clock, against 6:55 faster for everyone.
The fieldCompare these two →6:55 faster This athlete9:27 faster -
Gent12 Dec 2025Doubles Open · Mixed1:03:26 PB41/863Beat 95%
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Maastricht19 Sep 2025Individual Open · Women1:16:1817/348Beat 95%