Progress against the field
From New York 2026 to Boston 2026, Juliann Jefferson got 6:03 faster than the field.
Over the same races everyone got 5:51 quicker, so 11:54 faster on the clock looks better than it was.
The largest gain on the field came from New York 2026 → Washington DC 2026: 5:30 in 98 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
6 races · 6 events
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Boston8 Oct 2026Individual Pro · Women1:12:4242/224Beat 81%
↑ 35 days after Washington DC 2026 0:33 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
0:37 slower on the clock, but the race was 1:10 slower for everyone, so this was 0:33 better than the field.
The fieldCompare these two →1:10 slower This athlete0:37 slower -
Washington DC3 Sep 2026Individual Pro · Women1:12:05 PB52/289Beat 82%
↑ 98 days after New York 2026 5:30 better than the field Why ↓Close ↑
12:31 faster on the clock, and the race was 7:01 faster for everyone, so 5:30 of it was this athlete.
The fieldCompare these two →7:01 faster This athlete12:31 faster -
New York28 May 2026Individual Pro · Women1:24:3652/182Beat 71%
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Houston26 Mar 2026Individual Open · Women1:12:46 PB16/648Beat 98%
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Rome26 Sep 2025Individual Open · Women1:21:34112/520Beat 79%
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New York30 May 2025Doubles Open · Mixed1:20:05 PB328/709Beat 54%