Progress against the field
Between Frankfurt 2024 and Berlin 2025, Katha Bertelmann lost 9:17 to the field.
The clock says 2:43 slower, but the races themselves got 6:34 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
4 races · 4 events
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Frankfurt12 Dec 2025Doubles Open · Women2:02:08 PB1475/1496Beat 1%
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Berlin16 May 2025Individual Open · Women2:11:43774/784Beat 1%
↑ 153 days after Frankfurt 2024 9:17 worse than the field Why ↓Close ↑
9:17 behind the field: 2:43 slower on the clock, against 6:34 faster for everyone.
The fieldCompare these two →6:34 faster This athlete2:43 slower -
Frankfurt14 Dec 2024Individual Open · Women2:09:00 PB746/763Beat 2%
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Frankfurt9 Dec 2023Relay · Mixed1:27:0518/24Beat 25%