Progress against the field
Between Birmingham 2022 and London Excel 2025, Thomas Birch pulled 32:55 ahead of the field.
Over the same races everyone got 7:51 quicker, so 40:46 faster on the clock looks better than it was.
776 days between Birmingham 2022 and London 2024 is the longest gap compared here, and the second race was 29:52 better than 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
3 races · 3 events
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London Excel4 Dec 2025Individual Open · Men1:12:35 PB618/2779Beat 78%
↑ 370 days after London 2024 3:03 better than the field Why ↓Close ↑
8:07 faster on the clock, and the race was 5:04 faster for everyone, so 3:03 of it was this athlete.
The fieldCompare these two →5:04 faster This athlete8:07 faster -
London29 Nov 2024Individual Open · Men1:20:42586/1637Beat 64%
↑ 776 days after Birmingham 2022 29:52 better than the field Why ↓Close ↑
29:52 better than the field: 32:39 faster on the clock, against 2:47 faster for everyone.
The fieldCompare these two →2:47 faster This athlete32:39 faster -
Birmingham15 Oct 2022Individual Open · Men1:53:21891/960Beat 7%