Progress against the field
From Boston 2025 to Boston 2026, Stephanie Zonfrillo and Kerry Taylor got 3:04 faster than the field.
The clock says 5:31 faster, but the races themselves got 2:27 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
4 races · 3 events
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Boston8 Oct 2026Doubles Open · Mixed1:38:08 PB272/373Beat 27%
↑ 377 days after Boston 2025, with Kerry Taylor 3:04 better than the field Why ↓Close ↑
3:04 better than the field: 5:31 faster on the clock, against 2:27 faster for everyone.
The fieldCompare these two →2:27 faster This pair5:31 faster -
Boston8 Oct 2026Doubles Open · Women1:34:55 PB407/691Beat 41%
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New York28 May 2026Doubles Open · Mixed1:50:01845/1034Beat 18%
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Boston26 Sep 2025Doubles Open · Mixed1:43:391142/1259Beat 9%