Progress against the field
Gemma Thomas has dropped 16:11 behind the field from Copenhagen 2024 to Birmingham 2024.
Over the same races everyone got 3:05 slower, so 19:16 slower on the clock looks worse 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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
6 races · 5 events
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Birmingham31 Oct 2026Doubles Open · Women1:28:32758/1246Beat 39%
↑ 185 days after Cardiff 2026, with Keira O'Brien 1:50 worse than the field Why ↓Close ↑
1:50 behind the field: 0:11 slower on the clock, against 1:39 faster for everyone.
The fieldCompare these two →1:39 faster This pair0:11 slower -
Geneva9 Oct 2026Doubles Open · Women1:33:56236/308Beat 23%
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Cardiff29 Apr 2026Doubles Open · Mixed1:17:52 PB184/419Beat 56%
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Cardiff29 Apr 2026Doubles Open · Women1:28:21 PB301/488Beat 38%
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Birmingham25 Oct 2024Individual Open · Women2:07:46791/846Beat 7%
↑ 216 days after Copenhagen 2024 16:11 worse than the field Why ↓Close ↑
16:11 behind the field: 19:16 slower on the clock, against 3:05 slower for everyone.
The fieldCompare these two →3:05 slower This athlete19:16 slower -
Copenhagen23 Mar 2024Individual Open · Women1:48:30 PB294/326Beat 10%