Progress against the field
Between London 2023 and London Excel 2025, Katie Smith and Clare Sergison pulled 4:50 ahead of the field.
Over the same races everyone got 4:11 quicker, so 9:01 faster on the clock looks better than it was.
370 days between London 2024 and London Excel 2025 is the longest gap compared here, and the second race was 9:32 better than the field.
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 Doubles Open · Women, with Clare Sergison, the one raced most; every comparison is in the list below.
Every race
7 races · 7 events
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Rome23 Sep 2026Doubles Open · Mixed1:18:40 PB236/652Beat 64%
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London Excel4 Dec 2025Doubles Open · Women1:15:52 PB413/1887Beat 78%
↑ 370 days after London 2024, with Clare Sergison 9:32 better than the field Why ↓Close ↑
12:40 faster on the clock, and the race was 3:08 faster for everyone, so 9:32 of it was this pair.
The fieldCompare these two →3:08 faster This pair12:40 faster -
London3 May 2025Individual Open · Women1:25:21 PB467/1368Beat 66%
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Manchester24 Jan 2025Doubles Open · Women1:25:12451/857Beat 47%
↑ 76 days after Manchester 2024, with Louise Grubb 2:10 better than the field Why ↓Close ↑
4:20 faster on the clock, and the race was 2:10 faster for everyone, so 2:10 of it was this pair.
The fieldCompare these two →2:10 faster This pair4:20 faster -
London29 Nov 2024Doubles Open · Women1:28:32693/1150Beat 40%
↑ 369 days after London 2023, with Clare Sergison 4:42 worse than the field Why ↓Close ↑
4:42 behind the field: 3:39 slower on the clock, against 1:03 faster for everyone.
The fieldCompare these two →1:03 faster This pair3:39 slower -
Manchester9 Nov 2024Doubles Open · Women1:29:32350/486Beat 28%
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London26 Nov 2023Doubles Open · Women1:24:53578/1096Beat 47%