Progress against the field
From Birmingham 2025 to Cardiff 2026, Beth Williams and Shannon Mackie got 2:38 faster than the field.
The clock says 7:25 faster, but the races themselves got 4:47 quicker for everyone.
The largest gain on the field came from Manchester 2026 → Cardiff 2026: 2:09 in 98 days.
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 Shannon Mackie, the one raced most; every comparison is in the list below.
Every race
11 races · 7 events
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Birmingham31 Oct 2026Doubles Open · Women1:11:22130/1246Beat 90%
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Cardiff29 Apr 2026Relay · Women1:43:0265/75Beat 13%
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Cardiff29 Apr 2026Doubles Open · Women1:08:41 PB33/862Beat 96%
↑ 460 days after Manchester 2025, with Emily Williams 0:20 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:57 faster on the clock looks better than it was: the race was 4:17 faster for everyone, which leaves this 0:20 behind the field.
The fieldCompare these two →4:17 faster This pair3:57 faster -
Cardiff29 Apr 2026Doubles Open · Women1:15:0652/265Beat 80%
↑ 98 days after Manchester 2026, with Shannon Mackie 2:09 better than the field Why ↓Close ↑
7:08 faster on the clock, and the race was 4:59 faster for everyone, so 2:09 of it was this pair.
The fieldCompare these two →4:59 faster This pair7:08 faster -
Cardiff29 Apr 2026Doubles Open · Mixed1:49:32 PB401/419Beat 4%
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Cardiff29 Apr 2026Doubles Open · Women1:24:46234/488Beat 52%
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Manchester21 Jan 2026Doubles Open · Women1:22:14447/1155Beat 61%
↑ 91 days after Birmingham 2025, with Shannon Mackie 0:29 better than the field Why ↓Close ↑
The race was 0:12 slower for everyone and the clock still says 0:17 faster: 0:29 gained on the field.
The fieldCompare these two →0:12 slower This pair0:17 faster -
London Excel4 Dec 2025Doubles Open · Women1:17:10384/1599Beat 76%
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Birmingham22 Oct 2025Doubles Open · Women1:22:31449/1111Beat 60%
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London3 May 2025Doubles Open · Women1:12:54138/1118Beat 88%
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Manchester24 Jan 2025Doubles Open · Women1:12:38123/857Beat 86%