Progress against the field
From Birmingham 2025 to Birmingham 2026, Helen Sherfield got 5:09 faster than the field.
The clock says 9:50 faster, but the races themselves got 4:41 quicker for everyone.
The biggest step was Birmingham 2025 → London Excel 2025: 4:12 on the field in 43 days.
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 · 5 events
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Birmingham31 Oct 2026Individual Open · Women1:24:08 PB147/552Beat 73%
↑ 331 days after London Excel 2025 0:57 better than the field Why ↓Close ↑
0:57 better than the field: 2:34 faster on the clock, against 1:37 faster for everyone.
The fieldCompare these two →1:37 faster This athlete2:34 faster -
Cardiff29 Apr 2026Doubles Open · Women1:19:01 PB213/862Beat 75%
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London Olympia24 Mar 2026Individual Pro · Women1:31:02 PB170/257Beat 34%
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London Excel4 Dec 2025Individual Open · Women1:26:42633/1542Beat 59%
↑ 43 days after Birmingham 2025 4:12 better than the field Why ↓Close ↑
7:16 faster on the clock, and the race was 3:04 faster for everyone, so 4:12 of it was this athlete.
The fieldCompare these two →3:04 faster This athlete7:16 faster -
Birmingham22 Oct 2025Individual Open · Women1:33:58192/380Beat 50%