Progress against the field
Between London 2025 and Birmingham 2026, Jo Williamson and Ann Durrell pulled 2:07 ahead of the field.
Over the same races everyone got 3:11 quicker, so 5:18 faster on the clock looks better than it was.
The longest gap between two races compared here, 361 days between London 2025 and Cardiff 2026, still ended 3:52 ahead of 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 Ann Durrell, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Birmingham31 Oct 2026Doubles Open · Women1:17:1082/341Beat 76%
↑ 185 days after Cardiff 2026, with Ann Durrell 1:45 worse than the field Why ↓Close ↑
1:45 behind the field: 0:06 slower on the clock, against 1:39 faster for everyone.
The fieldCompare these two →1:39 faster This pair0:06 slower -
Cardiff29 Apr 2026Doubles Open · Women1:17:04 PB169/862Beat 80%
↑ 361 days after London 2025, with Ann Durrell 3:52 better than the field Why ↓Close ↑
3:52 better than the field: 5:24 faster on the clock, against 1:32 faster for everyone.
The fieldCompare these two →1:32 faster This pair5:24 faster -
Manchester21 Jan 2026Individual Open · Women1:32:27 PB116/263Beat 56%
↑ 438 days after Manchester 2024 12:11 better than the field Why ↓Close ↑
14:24 faster on the clock, and the race was 2:13 faster for everyone, so 12:11 of it was this athlete.
The fieldCompare these two →2:13 faster This athlete14:24 faster -
London3 May 2025Doubles Open · Women1:22:28506/1118Beat 55%
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Manchester9 Nov 2024Individual Open · Women1:46:51239/285Beat 16%