Progress against the field
Between Rotterdam 2025 and Rotterdam 2026, Femke van Sinderen pulled 6:09 ahead of the field.
The clock says 11:20 faster, but the races themselves got 5:11 quicker for everyone.
The largest gain on the field came from Amsterdam 2026 → Rotterdam 2026: 5:31 in 84 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.
Every race
4 races · 3 events
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Rotterdam15 Apr 2026Doubles Open · Women2:02:21 PB457/466Beat 2%
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Rotterdam15 Apr 2026Individual Open · Women1:21:51 PB108/695Beat 85%
↑ 84 days after Amsterdam 2026 5:31 better than the field Why ↓Close ↑
5:31 better than the field: 5:45 faster on the clock, against 0:14 faster for everyone.
The fieldCompare these two →0:14 faster This athlete5:45 faster -
Amsterdam21 Jan 2026Individual Open · Women1:27:3694/288Beat 67%
↑ 328 days after Rotterdam 2025 0:38 better than the field Why ↓Close ↑
5:35 faster on the clock, and the race was 4:57 faster for everyone, so 0:38 of it was this athlete.
The fieldCompare these two →4:57 faster This athlete5:35 faster -
Rotterdam27 Feb 2025Individual Open · Women1:33:11199/411Beat 52%