Progress against the field
From Birmingham 2025 to Birmingham 2026, Tamsin Mcallister has moved with the field: what changed on the clock changed for everyone.
The clock says 2:53 faster, but the races themselves got 2:48 quicker for everyone.
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
7 races · 6 events
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Birmingham31 Oct 2026Individual Pro · Women1:21:21 PB121/280Beat 57%
↑ 374 days after Birmingham 2025 0:05 better than the field Why ↓Close ↑
2:53 faster on the clock, and the race was 2:48 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →2:48 faster This athlete2:53 faster -
Mechelen26 Mar 2026Doubles Pro · Women1:06:1424/133Beat 82%
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London Excel4 Dec 2025Relay · Mixed57:4310/126Beat 92%
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London Excel4 Dec 2025Doubles Pro · Women1:05:28 PB27/339Beat 92%
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Birmingham22 Oct 2025Individual Pro · Women1:24:1466/141Beat 53%
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Toulouse8 Feb 2025Doubles Open · Women1:06:22 PB7/796Beat 99%
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London29 Nov 2024Individual Open · Women1:21:19 PB149/590Beat 75%