Progress against the field
From New York 2024 to Boston 2025, Hailey Blackburn got 2:59 faster than the field.
The clock says 9:27 faster, but the races themselves got 6:28 quicker for everyone.
The longest gap between two races compared here, 363 days between New York 2024 and New York 2025, still ended 5:33 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.
Every race
5 races · 5 events
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Chicago14 Nov 2025Doubles Pro · Women1:10:44 PB27/229Beat 88%
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Boston26 Sep 2025Individual Open · Women1:13:2540/1290Beat 97%
↑ 119 days after New York 2025 2:34 worse than the field Why ↓Close ↑
0:13 slower on the clock in a race that was 2:21 faster for everyone: 2:34 lost to the field.
The fieldCompare these two →2:21 faster This athlete0:13 slower -
New York30 May 2025Individual Open · Women1:13:12 PB32/781Beat 96%
↑ 363 days after New York 2024 5:33 better than the field Why ↓Close ↑
5:33 better than the field: 9:40 faster on the clock, against 4:07 faster for everyone.
The fieldCompare these two →4:07 faster This athlete9:40 faster -
New York1 Jun 2024Individual Open · Women1:22:5295/592Beat 84%
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Washington D.C. Open North American ChampionshipsDate unknownIndividual Open · Women1:18:44138/893Beat 85%