Progress against the field
From Birmingham 2025 to Birmingham 2026, Charlotte Martin and Zac Smith have moved with the field: what changed on the clock changed for everyone.
Over the same races everyone got 3:36 quicker, so 3:24 faster on the clock looks better than it was.
The longest gap between two races compared here, 189 days between Birmingham 2025 and Cardiff 2026, cost 3:56 on 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. The summary above covers Doubles Open · Mixed, with Zac Smith, the one raced most; every comparison is in the list below.
Every race
8 races · 7 events
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Birmingham31 Oct 2026Doubles Open · Women1:21:19 PB476/1246Beat 62%
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Birmingham31 Oct 2026Doubles Open · Mixed1:19:01 PB131/293Beat 55%
↑ 185 days after Cardiff 2026, with Zac Smith 3:44 better than the field Why ↓Close ↑
3:44 better than the field: 5:21 faster on the clock, against 1:37 faster for everyone.
The fieldCompare these two →1:37 faster This pair5:21 faster -
Cardiff29 Apr 2026Doubles Open · Mixed1:24:22510/848Beat 40%
↑ 189 days after Birmingham 2025, with Zac Smith 3:56 worse than the field Why ↓Close ↑
3:56 behind the field: 1:57 slower on the clock, against 1:59 faster for everyone.
The fieldCompare these two →1:59 faster This pair1:57 slower -
Birmingham22 Oct 2025Doubles Open · Mixed1:22:25577/954Beat 40%
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London3 May 2025Doubles Open · Women1:24:24577/1118Beat 48%
↑ 99 days after Manchester 2025, with Leah Godfrey 0:00 better than the field Why ↓Close ↑
Moved with the field: 3:28 faster on the clock, against 3:28 faster for everyone.
The fieldCompare these two →3:28 faster This pair3:28 faster -
Manchester24 Jan 2025Doubles Open · Women1:27:52526/857Beat 39%
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London29 Nov 2024Individual Open · Women1:57:46 PB799/940Beat 15%
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Dublin28 Oct 2023Doubles Open · Women1:30:39189/352Beat 46%