Progress against the field
From Birmingham 2025 to Birmingham 2026, Jason Duffy got 14:17 faster than the field.
Over the same races everyone got 3:59 quicker, so 18:16 faster on the clock looks better than it was.
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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Birmingham31 Oct 2026Individual Open · Men1:24:13 PB359/693Beat 48%
↑ 374 days after Birmingham 2025 14:17 better than the field Why ↓Close ↑
18:16 faster on the clock, and the race was 3:59 faster for everyone, so 14:17 of it was this athlete.
The fieldCompare these two →3:59 faster This athlete18:16 faster -
Glasgow11 Mar 2026Doubles Open · Men1:12:46 PB99/243Beat 59%
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London Excel4 Dec 2025Doubles Open · Men1:26:511877/2102Beat 11%
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Birmingham22 Oct 2025Individual Open · Men1:42:291511/1821Beat 17%