Progress against the field
Ellie Summerhayes and Kallie Arthur have dropped 6:10 behind the field from Birmingham 2024 to Cardiff 2026.
Over the same races everyone got 5:23 quicker, so 0:47 slower on the clock looks better than it was.
The longest gap between two races compared here, 405 days between Birmingham 2024 and London Excel 2025, still ended 2:25 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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Cardiff29 Apr 2026Doubles Open · Women1:24:10127/265Beat 52%
↑ 146 days after London Excel 2025, with Kallie Arthur 8:35 worse than the field Why ↓Close ↑
7:22 slower on the clock in a race that was 1:13 faster for everyone: 8:35 lost to the field.
The fieldCompare these two →1:13 faster This pair7:22 slower -
London Excel4 Dec 2025Doubles Open · Women1:16:48 PB364/1599Beat 77%
↑ 405 days after Birmingham 2024, with Kallie Arthur 2:25 better than the field Why ↓Close ↑
2:25 better than the field: 6:35 faster on the clock, against 4:10 faster for everyone.
The fieldCompare these two →4:10 faster This pair6:35 faster -
Birmingham25 Oct 2024Doubles Open · Women1:23:23153/397Beat 62%
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Sports Direct HYROX London4 May 2024Individual Open · Women1:26:01 PB483/1307Beat 63%