Progress against the field
Naomi O'Brien has gained 1:48 on the field from London Excel 2025 to Birmingham 2026.
Over the same races everyone got 1:37 quicker, so 3:25 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
6 races · 4 events
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Birmingham31 Oct 2026Doubles Open · Women1:02:50 PB3/627Beat 100%
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Birmingham31 Oct 2026Individual Open · Women1:15:31 PB49/545Beat 91%
↑ 331 days after London Excel 2025 1:48 better than the field Why ↓Close ↑
3:25 faster on the clock, and the race was 1:37 faster for everyone, so 1:48 of it was this athlete.
The fieldCompare these two →1:37 faster This athlete3:25 faster -
London Olympia24 Mar 2026Doubles Open · Women1:08:5812/404Beat 97%
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London Excel4 Dec 2025Relay · Women1:20:0852/141Beat 63%
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London Excel4 Dec 2025Individual Open · Women1:18:56289/1542Beat 81%
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Birmingham22 Oct 2025Doubles Open · Women1:08:0533/1111Beat 97%