Progress against the field
Ashton Clarke-Jackman has gained 3:33 on the field from Birmingham 2025 to Glasgow 2026.
Over the same races everyone got 4:20 quicker, so 7:53 faster on the clock looks better than it was.
The largest gain on the field came from Manchester 2026 → Glasgow 2026: 2:16 in 49 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.
Every race
4 races · 4 events
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Glasgow11 Mar 2026Individual Open · Men1:18:55 PB546/1452Beat 62%
↑ 49 days after Manchester 2026 2:16 better than the field Why ↓Close ↑
2:16 better than the field: 4:41 faster on the clock, against 2:25 faster for everyone.
The fieldCompare these two →2:25 faster This athlete4:41 faster -
Manchester21 Jan 2026Individual Open · Men1:23:36741/1463Beat 49%
↑ 48 days after London Excel 2025 0:40 worse than the field Why ↓Close ↑
1:47 slower on the clock in a race that was 1:07 slower for everyone: 0:40 lost to the field.
The fieldCompare these two →1:07 slower This athlete1:47 slower -
London Excel4 Dec 2025Individual Open · Men1:21:491329/2779Beat 52%
↑ 43 days after Birmingham 2025 1:57 better than the field Why ↓Close ↑
4:59 faster on the clock, and the race was 3:02 faster for everyone, so 1:57 of it was this athlete.
The fieldCompare these two →3:02 faster This athlete4:59 faster -
Birmingham22 Oct 2025Individual Open · Men1:26:48278/523Beat 47%