Progress against the field
David Leach has dropped 3:34 behind the field from Manchester 2025 to Birmingham 2026.
Over the same races everyone got 11:29 quicker, so 7:55 faster on the clock looks better than it was.
The largest gain on the field came from London 2025 → Birmingham 2025: 3:36 in 172 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
5 races · 5 events
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Birmingham31 Oct 2026Individual Open · Men1:34:56988/1442Beat 32%
↑ 170 days after Barcelona 2026 1:16 worse than the field Why ↓Close ↑
1:16 behind the field: no different on the clock, against 1:16 faster for everyone.
The fieldCompare these two →1:16 faster This athleteno different -
Barcelona14 May 2026Individual Open · Men1:34:56 PB929/1158Beat 20%
↑ 204 days after Birmingham 2025 0:42 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:46 faster on the clock, yet the race was 5:28 faster for everyone, so 0:42 was lost on the field.
The fieldCompare these two →5:28 faster This athlete4:46 faster -
Birmingham22 Oct 2025Individual Open · Men1:39:421454/1821Beat 20%
↑ 172 days after London 2025 3:36 better than the field Why ↓Close ↑
3:36 better than the field: 3:41 faster on the clock, against 0:05 faster for everyone.
The fieldCompare these two →0:05 faster This athlete3:41 faster -
London3 May 2025Individual Open · Men1:43:231693/1917Beat 12%
↑ 99 days after Manchester 2025 5:12 worse than the field Why ↓Close ↑
5:12 behind the field: 0:32 slower on the clock, against 4:40 faster for everyone.
The fieldCompare these two →4:40 faster This athlete0:32 slower -
Manchester24 Jan 2025Individual Open · Men1:42:511042/1191Beat 13%