Progress against the field
From Boston 2025 to New York 2026, Alexus Costa got 6:32 faster than the field.
Over the same races everyone got 0:33 slower, so 5:59 faster on the clock looks worse 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.
Every race
3 races · 3 events
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New York28 May 2026Individual Open · Women1:25:49 PB92/586Beat 84%
↑ 244 days after Boston 2025 6:32 better than the field Why ↓Close ↑
The race was 0:33 slower for everyone and the clock still says 5:59 faster: 6:32 gained on the field.
The fieldCompare these two →0:33 slower This athlete5:59 faster -
Houston26 Mar 2026Doubles Open · Mixed1:11:11 PB50/520Beat 90%
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Boston26 Sep 2025Individual Open · Women1:31:48542/1290Beat 58%