Progress against the field
Corien De Boer has gained 5:05 on the field from Amsterdam 2026 to Heerenveen 2026.
Over the same races everyone got 1:19 quicker, so 6:24 faster 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.
Every race
4 races · 4 events
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Heerenveen14 May 2026Individual Open · Women1:18:07 PB46/427Beat 89%
↑ 113 days after Amsterdam 2026 5:05 better than the field Why ↓Close ↑
5:05 better than the field: 6:24 faster on the clock, against 1:19 faster for everyone.
The fieldCompare these two →1:19 faster This athlete6:24 faster -
Amsterdam21 Jan 2026Individual Open · Women1:24:31320/1122Beat 72%
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Amsterdam4 Nov 2023Relay · Mixed1:08:544/22Beat 82%
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Rotterdam20 May 2023Relay · Mixed1:32:3015/18Beat 17%