Progress against the field
Kerri Costa and Andrea Davis have dropped 3:24 behind the field from Boston 2025 to Boston 2026.
The clock says 0:31 faster, but the races themselves got 3:55 quicker for everyone.
The longest gap between two races compared here, 244 days between Boston 2025 and New York 2026, cost 3:54 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
4 races · 3 events
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Boston8 Oct 2026Relay · Mixed1:10:4019/85Beat 78%
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Boston8 Oct 2026Doubles Open · Women1:23:26 PB177/742Beat 76%
↑ 133 days after New York 2026, with Andrea Davis 0:30 better than the field Why ↓Close ↑
0:30 better than the field: 4:53 faster on the clock, against 4:23 faster for everyone.
The fieldCompare these two →4:23 faster This pair4:53 faster -
New York28 May 2026Doubles Open · Women1:28:19135/399Beat 66%
↑ 244 days after Boston 2025, with Andrea Davis 3:54 worse than the field Why ↓Close ↑
3:54 behind the field: 4:22 slower on the clock, against 0:28 slower for everyone.
The fieldCompare these two →0:28 slower This pair4:22 slower -
Boston26 Sep 2025Doubles Open · Women1:23:57527/1424Beat 63%