Progress against the field
From Birmingham 2025 to London Olympia 2026, Grace Oswin got 1:19 faster than the field.
Over the same races everyone got 4:28 quicker, so 5:47 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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London Olympia24 Mar 2026Individual Open · Women1:31:21 PB110/253Beat 57%
↑ 110 days after London Excel 2025 0:00 better than the field Why ↓Close ↑
Moved with the field: 1:24 faster on the clock, against 1:24 faster for everyone.
The fieldCompare these two →1:24 faster This athlete1:24 faster -
London Excel4 Dec 2025Individual Open · Women1:32:45688/1379Beat 50%
↑ 43 days after Birmingham 2025 1:19 better than the field Why ↓Close ↑
4:23 faster on the clock, and the race was 3:04 faster for everyone, so 1:19 of it was this athlete.
The fieldCompare these two →3:04 faster This athlete4:23 faster -
Birmingham22 Oct 2025Individual Open · Women1:37:08219/380Beat 42%
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Birmingham25 Oct 2024Doubles Open · Mixed1:29:38 PB353/494Beat 29%