Progress against the field
Tiff Penfold has dropped 4:41 behind the field from Manchester 2025 to London Excel 2025.
The clock says 2:58 faster, but the races themselves got 7:39 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.
Every race
5 races · 4 events
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London Excel4 Dec 2025Individual Open · Women1:04:21 PB4/1379Beat 100%
↑ 215 days after London 2025 0:47 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:40 faster on the clock, yet the race was 3:27 faster for everyone, so 0:47 was lost on the field.
The fieldCompare these two →3:27 faster This athlete2:40 faster -
London3 May 2025Doubles Open · Mixed1:02:36 PB49/956Beat 95%
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London3 May 2025Individual Open · Women1:07:019/1368Beat 99%
↑ 99 days after Manchester 2025 3:54 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:18 faster on the clock, yet the race was 4:12 faster for everyone, so 3:54 was lost on the field.
The fieldCompare these two →4:12 faster This athlete0:18 faster -
Manchester24 Jan 2025Individual Open · Women1:07:196/539Beat 99%
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World ChampionshipsDate unknownIndividual Pro · Women1:20:18 PB392/470Beat 17%