Progress against the field
Between Chicago 2023 and Chicago Navy Pier 2024, Brittany Swiatowiec pulled 7:11 ahead of the field.
Over the same races everyone got 3:47 quicker, so 10:58 faster on the clock looks better than it was.
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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Chicago14 Nov 2025Individual Open · Women1:31:23 PB506/1127Beat 55%
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Chicago Navy Pier16 Nov 2024Individual Pro · Women1:38:50 PB73/84Beat 13%
↑ 371 days after Chicago 2023 7:11 better than the field Why ↓Close ↑
10:58 faster on the clock, and the race was 3:47 faster for everyone, so 7:11 of it was this athlete.
The fieldCompare these two →3:47 faster This athlete10:58 faster -
Chicago11 Nov 2023Individual Pro · Women1:49:4849/54Beat 9%
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Chicago5 Nov 2022Doubles Open · Women1:46:02 PB53/85Beat 38%
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Chicago26 Jun 2021Doubles Open · Women1:55:5238/41Beat 7%