Progress against the field
From Chicago 2023 to Las Vegas 2026, the field gained 1:13 on Amy Cody.
Over the same races everyone got 3:56 quicker, so 2:43 faster on the clock looks better than it was.
The longest gap between two races compared here, 734 days between Chicago 2023 and Chicago 2025, cost 1:29 on 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
3 races · 3 events
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Las Vegas20 Feb 2026Individual Open · Women1:28:06 PB494/1796Beat 73%
↑ 98 days after Chicago 2025 0:16 better than the field Why ↓Close ↑
0:31 faster on the clock, and the race was 0:15 faster for everyone, so 0:16 of it was this athlete.
The fieldCompare these two →0:15 faster This athlete0:31 faster -
Chicago14 Nov 2025Individual Open · Women1:28:37412/1127Beat 63%
↑ 734 days after Chicago 2023 1:29 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:12 faster on the clock, yet the race was 3:41 faster for everyone, so 1:29 was lost on the field.
The fieldCompare these two →3:41 faster This athlete2:12 faster -
Chicago11 Nov 2023Individual Open · Women1:30:49144/299Beat 52%