Progress against the field
Between Boston 2025 and Chicago 2025, Erin Genova lost 1:27 to the field.
The clock says 1:26 faster, but the races themselves got 2:53 quicker for everyone.
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
2 races · 2 events
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Chicago14 Nov 2025Individual Open · Women1:11:23 PB35/1127Beat 97%
↑ 49 days after Boston 2025 1:27 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:26 faster on the clock looks better than it was: the race was 2:53 faster for everyone, which leaves this 1:27 behind the field.
The fieldCompare these two →2:53 faster This athlete1:26 faster -
Boston26 Sep 2025Individual Open · Women1:12:4932/1290Beat 98%