Progress against the field
Between Cardiff 2025 and Birmingham 2026, Louise Kirby lost 7:20 to the field.
The clock says 1:14 slower, but the races themselves got 6:06 quicker for everyone.
The longest gap between two races compared here, 188 days between Cardiff 2025 and London Excel 2025, cost 11:20 on 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.
Every race
4 races · 4 events
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Birmingham31 Oct 2026Individual Open · Women2:09:32498/545Beat 9%
↑ 185 days after Cardiff 2026 9:52 worse than the field Why ↓Close ↑
9:52 behind the field: 7:09 slower on the clock, against 2:43 faster for everyone.
The fieldCompare these two →2:43 faster This athlete7:09 slower -
Cardiff29 Apr 2026Individual Open · Women2:02:23 PB574/646Beat 11%
↑ 146 days after London Excel 2025 13:52 better than the field Why ↓Close ↑
15:01 faster on the clock, and the race was 1:09 faster for everyone, so 13:52 of it was this athlete.
The fieldCompare these two →1:09 faster This athlete15:01 faster -
London Excel4 Dec 2025Individual Open · Women2:17:241317/1379Beat 5%
↑ 188 days after Cardiff 2025 11:20 worse than the field Why ↓Close ↑
11:20 behind the field: 9:06 slower on the clock, against 2:14 faster for everyone.
The fieldCompare these two →2:14 faster This athlete9:06 slower -
Cardiff30 May 2025Individual Open · Women2:08:18387/400Beat 3%