Progress against the field
From Cardiff 2025 to Birmingham 2026, Sally Campbell and Chloe Hayter got 0:24 faster than the field.
Over the same races everyone got 4:32 quicker, so 4:56 faster on the clock looks better than it was.
The longest gap between two races compared here, 234 days between Glasgow 2026 and Birmingham 2026, still ended 3:14 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.
Every race
7 races · 7 events
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Birmingham31 Oct 2026Doubles Open · Women1:14:08202/1246Beat 84%
↑ 234 days after Glasgow 2026, with Chloe Hayter 3:14 better than the field Why ↓Close ↑
3:14 better than the field: 6:37 faster on the clock, against 3:23 faster for everyone.
The fieldCompare these two →3:23 faster This pair6:37 faster -
Cardiff29 Apr 2026Doubles Open · Women1:13:05 PB35/265Beat 87%
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Glasgow11 Mar 2026Doubles Open · Women1:20:4570/279Beat 75%
↑ 140 days after Birmingham 2025, with Chloe Hayter 0:28 worse than the field Why ↓Close ↑
0:28 behind the field: 0:31 slower on the clock, against 0:03 slower for everyone.
The fieldCompare these two →0:03 slower This pair0:31 slower -
London Excel4 Dec 2025Individual Open · Women1:29:19 PB555/1379Beat 60%
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Birmingham22 Oct 2025Doubles Open · Women1:20:14289/904Beat 68%
↑ 145 days after Cardiff 2025, with Chloe Hayter 2:22 worse than the field Why ↓Close ↑
2:22 behind the field: 1:10 slower on the clock, against 1:12 faster for everyone.
The fieldCompare these two →1:12 faster This pair1:10 slower -
Cardiff30 May 2025Doubles Open · Women1:19:04199/529Beat 62%
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Cologne10 Apr 2025Doubles Open · Women1:22:18131/295Beat 56%