Progress against the field
Between London Excel 2025 and Birmingham 2026, Amber Bolger lost 3:56 to the field.
Over the same races everyone got 2:40 quicker, so 1:16 slower on the clock looks better than it was.
The longest gap between two races compared here, 221 days between London Olympia 2026 and Birmingham 2026, still ended 1:38 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.
Every race
4 races · 4 events
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Birmingham31 Oct 2026Individual Open · Women1:30:56403/887Beat 55%
↑ 221 days after London Olympia 2026 1:38 better than the field Why ↓Close ↑
2:54 faster on the clock, and the race was 1:16 faster for everyone, so 1:38 of it was this athlete.
The fieldCompare these two →1:16 faster This athlete2:54 faster -
Cardiff29 Apr 2026Doubles Open · Women1:14:03 PB44/265Beat 83%
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London Olympia24 Mar 2026Individual Open · Women1:33:50379/758Beat 50%
↑ 110 days after London Excel 2025 5:34 worse than the field Why ↓Close ↑
4:10 slower on the clock in a race that was 1:24 faster for everyone: 5:34 lost to the field.
The fieldCompare these two →1:24 faster This athlete4:10 slower -
London Excel4 Dec 2025Individual Open · Women1:29:40 PB771/1542Beat 50%