Progress against the field
Jason Ayliffe has gained 3:57 on the field from London 2023 to Cardiff 2026.
Over the same races everyone got 6:18 quicker, so 10:15 faster on the clock looks better than it was.
The longest gap between two races compared here, 739 days between London 2023 and London Excel 2025, still ended 1:08 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
5 races · 3 events
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Cardiff29 Apr 2026Doubles Open · Men1:02:40 PB72/478Beat 85%
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Cardiff29 Apr 2026Individual Open · Men1:17:38 PB295/913Beat 68%
↑ 146 days after London Excel 2025 2:49 better than the field Why ↓Close ↑
4:34 faster on the clock, and the race was 1:45 faster for everyone, so 2:49 of it was this athlete.
The fieldCompare these two →1:45 faster This athlete4:34 faster -
London Excel4 Dec 2025Doubles Open · Men1:07:52756/2102Beat 64%
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London Excel4 Dec 2025Individual Open · Men1:22:121285/2771Beat 54%
↑ 739 days after London 2023 1:08 better than the field Why ↓Close ↑
1:08 better than the field: 5:41 faster on the clock, against 4:33 faster for everyone.
The fieldCompare these two →4:33 faster This athlete5:41 faster -
London26 Nov 2023Individual Open · Men1:27:531052/1865Beat 44%