Progress against the field
From Cardiff 2026 to Birmingham 2026, Tilly Shamsaee and Dale Stammers got 3:20 faster than the field.
Over the same races everyone got 1:39 quicker, so 4:59 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 · 5 events
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Birmingham31 Oct 2026Doubles Open · Women1:11:30 PB34/341Beat 90%
↑ 185 days after Cardiff 2026, with Dale Stammers 3:20 better than the field Why ↓Close ↑
4:59 faster on the clock, and the race was 1:39 faster for everyone, so 3:20 of it was this pair.
The fieldCompare these two →1:39 faster This pair4:59 faster -
Cardiff29 Apr 2026Doubles Open · Women1:16:29151/862Beat 83%
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Cardiff29 Apr 2026Doubles Open · Women1:16:1064/265Beat 76%
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London Excel4 Dec 2025Doubles Open · Mixed1:08:31 PB200/1372Beat 85%
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Malaga21 Mar 2025Individual Open · Women1:34:47 PB299/510Beat 41%
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Birmingham21 Oct 2023Individual Open · Women1:39:52352/532Beat 34%