Progress against the field
Between Chicago 2023 and Chicago 2025, Nadia Arimbado pulled 35:52 ahead of the field.
Over the same races everyone got 4:54 quicker, so 40:46 faster on the clock looks better than it was.
The longest gap between two races compared here, 371 days between Chicago 2023 and Chicago Navy Pier 2024, still ended 33:02 ahead of 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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
12 races · 9 events
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Miami3 Apr 2026Doubles Pro · Women1:23:26 PB130/235Beat 45%
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Miami3 Apr 2026Individual Pro · Women1:38:53159/253Beat 37%
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Cancun13 Mar 2026Individual Pro · Women1:42:2465/120Beat 46%
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Phoenix29 Jan 2026Individual Pro · Women1:35:12 PB225/294Beat 24%
↑ 244 days after New York 2025 13:45 better than the field Why ↓Close ↑
12:26 faster on the clock in a race that was 1:19 slower for everyone: 13:45 better than the field.
The fieldCompare these two →1:19 slower This athlete12:26 faster -
Chicago14 Nov 2025Relay · Women1:06:132/80Beat 98%
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Chicago14 Nov 2025Doubles Open · Women1:18:11 PB274/1539Beat 82%
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Chicago14 Nov 2025Individual Open · Women1:21:31 PB219/1127Beat 81%
↑ 363 days after Chicago Navy Pier 2024 2:50 better than the field Why ↓Close ↑
2:50 better than the field: 6:14 faster on the clock, against 3:24 faster for everyone.
The fieldCompare these two →3:24 faster This athlete6:14 faster -
New York30 May 2025Individual Pro · Women1:47:38101/113Beat 11%
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Las Vegas1 Feb 2025Individual Pro · Women1:46:2199/112Beat 12%
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Chicago Navy Pier16 Nov 2024Individual Open · Women1:27:45206/599Beat 66%
↑ 371 days after Chicago 2023 33:02 better than the field Why ↓Close ↑
34:32 faster on the clock, and the race was 1:30 faster for everyone, so 33:02 of it was this athlete.
The fieldCompare these two →1:30 faster This athlete34:32 faster -
Chicago11 Nov 2023Individual Open · Women2:02:17276/299Beat 8%
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Chicago5 Nov 2022Doubles Open · Women1:46:4054/85Beat 37%