Progress against the field
From London Excel 2025 to London Olympia 2026, Kelly Birchmore and Sophie Day got 0:56 faster than the field.
Over the same races everyone got 1:48 quicker, so 2:44 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
3 races · 3 events
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London Olympia24 Mar 2026Doubles Open · Women1:25:46 PB86/174Beat 51%
↑ 110 days after London Excel 2025, with Sophie Day 0:56 better than the field Why ↓Close ↑
2:44 faster on the clock, and the race was 1:48 faster for everyone, so 0:56 of it was this pair.
The fieldCompare these two →1:48 faster This pair2:44 faster -
London Excel4 Dec 2025Doubles Open · Women1:28:301270/1887Beat 33%
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London3 May 2025Relay · Women1:35:17117/141Beat 17%