Progress against the field
Between Birmingham 2025 and Birmingham 2026, Ceri Cave and Christabel Boersma pulled 2:06 ahead of the field.
The clock says 4:53 faster, but the races themselves got 2:47 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 Doubles Pro · Women, with Christabel Boersma, the one raced most; every comparison is in the list below.
Every race
15 races · 14 events
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Birmingham31 Oct 2026Doubles Pro · Women1:11:39 PB116/301Beat 62%
↑ 331 days after London Excel 2025, with Christabel Boersma 0:09 better than the field Why ↓Close ↑
Moved with the field: 2:31 faster on the clock, against 2:22 faster for everyone.
The fieldCompare these two →2:22 faster This pair2:31 faster -
Manchester21 Jan 2026Doubles Open · Mixed1:20:37 PB447/824Beat 46%
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London Excel4 Dec 2025Doubles Pro · Women1:14:10106/339Beat 69%
↑ 43 days after Birmingham 2025, with Christabel Boersma 1:57 better than the field Why ↓Close ↑
2:22 faster on the clock, and the race was 0:25 faster for everyone, so 1:57 of it was this pair.
The fieldCompare these two →0:25 faster This pair2:22 faster -
Birmingham22 Oct 2025Doubles Pro · Women1:16:3284/163Beat 49%
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Cardiff30 May 2025Individual Open · Women1:21:08152/587Beat 74%
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London3 May 2025Doubles Open · Women1:11:30100/1118Beat 91%
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Sharjah12 Apr 2025Individual Open · Women1:21:0259/240Beat 75%
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Glasgow12 Mar 2025Doubles Open · Women1:11:0064/1051Beat 94%
↑ 472 days after London 2023, with Christabel Boersma 1:17 worse than the field Why ↓Close ↑
0:26 slower on the clock in a race that was 0:51 faster for everyone: 1:17 lost to the field.
The fieldCompare these two →0:51 faster This pair0:26 slower -
Stockholm7 Dec 2024Individual Open · Women1:22:2687/348Beat 75%
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London29 Nov 2024Doubles Pro · Women1:17:2429/73Beat 60%
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Katowice24 Feb 2024Individual Open · Women1:18:33 PB24/175Beat 86%
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Katowice24 Feb 2024Relay · Mixed1:04:536/24Beat 75%
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London26 Nov 2023Doubles Open · Women1:10:34 PB80/1096Beat 93%
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Birmingham21 Oct 2023Individual Open · Women1:23:37115/532Beat 78%
↑ 336 days after London 2022 1:06 better than the field Why ↓Close ↑
1:06 better than the field: 1:10 faster on the clock, against 0:04 faster for everyone.
The fieldCompare these two →0:04 faster This athlete1:10 faster -
London19 Nov 2022Individual Open · Women1:24:47147/411Beat 64%