Progress against the field
Between Birmingham 2025 and London Excel 2025, Isla Horsburgh lost 0:37 to the field.
The clock says 1:42 faster, but the races themselves got 2:19 quicker for everyone.
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 Pro · Women, the one raced most; every comparison is in the list below.
Every race
14 races · 13 events
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Gdansk10 Oct 2026Individual Pro · Women1:19:3952/143Beat 64%
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Tenerife4 Sep 2026Doubles Open · Mixed1:03:4915/542Beat 97%
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Cardiff29 Apr 2026Doubles Pro · Women1:06:08 PB23/196Beat 88%
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Malaga16 Apr 2026Individual Pro · Women1:16:2252/146Beat 64%
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Manchester21 Jan 2026Relay · Women1:23:4338/71Beat 47%
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Manchester21 Jan 2026Doubles Open · Mixed59:13 PB20/824Beat 98%
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London Excel4 Dec 2025Individual Pro · Women1:08:15 PB18/315Beat 94%
↑ 43 days after Birmingham 2025 0:37 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:42 faster on the clock looks better than it was: the race was 2:19 faster for everyone, which leaves this 0:37 behind the field.
The fieldCompare these two →2:19 faster This athlete1:42 faster -
Birmingham22 Oct 2025Individual Pro · Women1:09:5715/141Beat 89%
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Malaga21 Mar 2025Individual Pro · Women1:20:5647/88Beat 47%
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Glasgow12 Mar 2025Individual Open · Women1:09:45 PB17/649Beat 97%
↑ 123 days after Manchester 2024 1:34 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:35 faster on the clock, yet the race was 4:09 faster for everyone, so 1:34 was lost on the field.
The fieldCompare these two →4:09 faster This athlete2:35 faster -
Manchester9 Nov 2024Individual Open · Women1:12:2012/285Beat 96%
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Birmingham25 Oct 2024Individual Pro · Women1:18:1223/102Beat 78%
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Amsterdam10 Oct 2024Individual Pro · Women1:15:5717/61Beat 72%
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Glasgow11 Feb 2023Individual Open · Women1:10:4724/442Beat 95%