Progress against the field
From Chicago 2022 to Chicago 2025, the field gained 4:55 on Brittany Keehan.
The clock says 2:56 faster, but the races themselves got 7:51 quicker for everyone.
734 days between Chicago 2023 and Chicago 2025 is the longest gap compared here, and the second race was 3:50 better than the field.
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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Chicago14 Nov 2025Individual Open · Women1:22:33 PB245/1127Beat 78%
↑ 734 days after Chicago 2023 3:50 better than the field Why ↓Close ↑
7:31 faster on the clock, and the race was 3:41 faster for everyone, so 3:50 of it was this athlete.
The fieldCompare these two →3:41 faster This athlete7:31 faster -
Chicago Navy Pier16 Nov 2024Doubles Open · Women1:27:04 PB223/447Beat 50%
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Chicago11 Nov 2023Individual Open · Women1:30:04139/299Beat 54%
↑ 371 days after Chicago 2022 8:45 worse than the field Why ↓Close ↑
8:45 behind the field: 4:35 slower on the clock, against 4:10 faster for everyone.
The fieldCompare these two →4:10 faster This athlete4:35 slower -
Chicago5 Nov 2022Individual Open · Women1:25:2942/156Beat 73%