Progress against the field
Between Birmingham 2024 and Birmingham 2026, Gemma Siebert lost 0:31 to the field.
Over the same races everyone got 8:47 quicker, so 8:16 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
5 races · 4 events
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Birmingham31 Oct 2026Individual Open · Women1:20:13 PB174/887Beat 80%
↑ 374 days after Birmingham 2025 0:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:01 faster on the clock, yet the race was 4:14 faster for everyone, so 0:13 was lost on the field.
The fieldCompare these two →4:14 faster This athlete4:01 faster -
Birmingham22 Oct 2025Doubles Open · Women1:18:25275/1111Beat 75%
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Birmingham22 Oct 2025Individual Open · Women1:24:1470/380Beat 82%
↑ 362 days after Birmingham 2024 0:18 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:15 faster on the clock looks better than it was: the race was 4:33 faster for everyone, which leaves this 0:18 behind the field.
The fieldCompare these two →4:33 faster This athlete4:15 faster -
Dublin15 Nov 2024Doubles Open · Women1:14:16 PB102/560Beat 82%
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Birmingham25 Oct 2024Individual Open · Women1:28:29180/564Beat 68%