Progress against the field
From Dallas 2024 to Boston 2026, Katie Jacyna got 7:06 faster than the field.
Over the same races everyone got 6:28 quicker, so 13:34 faster on the clock looks better than it was.
The largest gain on the field came from Phoenix 2026 → Boston 2026: 18:26 in 252 days.
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
8 races · 8 events
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Boston8 Oct 2026Individual Open · Women1:33:53 PB153/452Beat 66%
↑ 252 days after Phoenix 2026 18:26 better than the field Why ↓Close ↑
17:52 faster on the clock in a race that was 0:34 slower for everyone: 18:26 better than the field.
The fieldCompare these two →0:34 slower This athlete17:52 faster -
Salt Lake City19 Sep 2026Individual Pro · Women1:48:06 PB192/243Beat 21%
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Miami3 Apr 2026Doubles Open · Women1:29:48 PB459/1037Beat 56%
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Phoenix29 Jan 2026Individual Open · Women1:51:45439/550Beat 20%
↑ 76 days after Chicago 2025 13:33 worse than the field Why ↓Close ↑
13:06 slower on the clock in a race that was 0:27 faster for everyone: 13:33 lost to the field.
The fieldCompare these two →0:27 faster This athlete13:06 slower -
Chicago14 Nov 2025Individual Open · Women1:38:39697/1127Beat 38%
↑ 49 days after Boston 2025 2:13 better than the field Why ↓Close ↑
2:13 better than the field: 5:06 faster on the clock, against 2:53 faster for everyone.
The fieldCompare these two →2:53 faster This athlete5:06 faster -
Boston26 Sep 2025Individual Open · Women1:43:45844/1290Beat 35%
↑ 307 days after Dallas 2024 0:00 better than the field Why ↓Close ↑
3:42 faster on the clock, and the race was 3:42 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →3:42 faster This athlete3:42 faster -
Dallas23 Nov 2024Individual Open · Women1:47:27406/620Beat 35%
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Miami BeachDate unknownIndividual Open · Women1:40:34468/684Beat 32%