Progress against the field
Between Amsterdam 2026 and Rotterdam 2026, Serena Webb pulled 1:42 ahead of the field.
The races themselves barely changed, so 1:52 faster on the clock is the real picture.
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
2 races · 2 events
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Rotterdam15 Apr 2026Individual Pro · Women1:13:42 PB24/128Beat 81%
↑ 84 days after Amsterdam 2026 1:42 better than the field Why ↓Close ↑
1:52 faster on the clock, and the race was 0:10 faster for everyone, so 1:42 of it was this athlete.
The fieldCompare these two →0:10 faster This athlete1:52 faster -
Amsterdam21 Jan 2026Individual Pro · Women1:15:3437/128Beat 71%