Progress against the field
Between New York 2025 and Washington DC 2026, Jamie O'Brien pulled 3:08 ahead of the field.
Over the same races everyone got 4:51 quicker, so 7:59 faster on the clock looks better than it was.
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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Boston8 Oct 2026Doubles Open · Women1:11:01 PB22/426Beat 95%
↑ 133 days after New York 2026, with Stephanie Hayes 3:06 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:17 faster on the clock looks better than it was: the race was 4:23 faster for everyone, which leaves this 3:06 behind the field.
The fieldCompare these two →4:23 faster This pair1:17 faster -
Washington DC3 Sep 2026Individual Open · Women1:18:50 PB34/530Beat 94%
↑ 461 days after New York 2025 3:08 better than the field Why ↓Close ↑
3:08 better than the field: 7:59 faster on the clock, against 4:51 faster for everyone.
The fieldCompare these two →4:51 faster This athlete7:59 faster -
New York28 May 2026Doubles Open · Women1:12:1817/722Beat 98%
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Boston26 Sep 2025Doubles Open · Women1:11:2577/1424Beat 95%
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New York30 May 2025Individual Open · Women1:26:49266/781Beat 66%