Progress against the field
From Warsaw 2025 to Birmingham 2026, James Bilham got 3:25 faster than the field.
The races barely moved for everyone else, so 3:01 faster on the clock is close to the whole story.
The longest gap between two races compared here, 331 days between London Excel 2025 and Birmingham 2026, still ended 3:33 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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Birmingham31 Oct 2026Individual Open · Men1:21:20 PB283/646Beat 56%
↑ 331 days after London Excel 2025 3:33 better than the field Why ↓Close ↑
4:56 faster on the clock, and the race was 1:23 faster for everyone, so 3:33 of it was this athlete.
The fieldCompare these two →1:23 faster This athlete4:56 faster -
Cardiff29 Apr 2026Doubles Open · Men1:18:23 PB357/522Beat 32%
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London Excel4 Dec 2025Individual Open · Men1:26:161658/2779Beat 40%
↑ 236 days after Warsaw 2025 0:08 worse than the field Why ↓Close ↑
Moved with the field: 1:55 slower on the clock, against 1:47 slower for everyone.
The fieldCompare these two →1:47 slower This athlete1:55 slower -
Warsaw12 Apr 2025Individual Open · Men1:24:21454/768Beat 41%
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Glasgow12 Mar 2025Doubles Open · Mixed1:23:46 PB523/841Beat 38%
↑ 123 days after Manchester 2024, with Ella Connolly 5:42 better than the field Why ↓Close ↑
5:42 better than the field: 7:18 faster on the clock, against 1:36 faster for everyone.
The fieldCompare these two →1:36 faster This pair7:18 faster -
Manchester9 Nov 2024Doubles Open · Mixed1:31:04337/410Beat 18%