Progress against the field
From Berlin 2026 to Stockholm 2026, Kerstin Bertsch has moved with the field: what changed on the clock changed for everyone.
The clock says 1:10 faster, but the races themselves got 1:06 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
10 races · 8 events
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Maastricht19 Sep 2026Doubles Pro · Women59:544/204Beat 98%
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Stockholm18 Jun 2026Individual Pro · Women1:04:43 PB56/751Beat 93%
↑ 27 days after Berlin 2026 0:04 better than the field Why ↓Close ↑
Moved with the field: 1:10 faster on the clock, against 1:06 faster for everyone.
The fieldCompare these two →1:06 faster This athlete1:10 faster -
Berlin22 May 2026Doubles Pro · Women59:534/151Beat 97%
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Berlin22 May 2026Individual Pro · Women1:05:5311/183Beat 94%
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Mechelen26 Mar 2026Individual Pro · Women1:05:5410/139Beat 93%
↑ 64 days after Amsterdam 2026 0:05 worse than the field Why ↓Close ↑
Moved with the field: 0:03 faster on the clock, against 0:08 faster for everyone.
The fieldCompare these two →0:08 faster This athlete0:03 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:11:13262/1206Beat 78%
↑ 40 days after Frankfurt 2025, with Simon Bertsch 12:13 worse than the field Why ↓Close ↑
12:13 behind the field: 9:05 slower on the clock, against 3:08 faster for everyone.
The fieldCompare these two →3:08 faster This pair9:05 slower -
Amsterdam21 Jan 2026Individual Pro · Women1:05:576/128Beat 95%
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Frankfurt12 Dec 2025Doubles Open · Mixed1:02:08 PB35/1469Beat 98%
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Stuttgart31 Oct 2025Individual Pro · Women1:10:1518/157Beat 89%
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BudapestDate unknownDoubles Pro · Women57:39 PB3/80Beat 96%