Progress against the field
From Chicago 2025 to New York 2026, Courtney Belcastro and Melissa DeLeo got 1:41 faster than the field.
The races themselves barely changed, so 1:53 faster on the clock is the real picture.
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 2026Doubles Open · Women1:21:09 PB80/722Beat 89%
↑ 195 days after Chicago 2025, with Melissa DeLeo 1:41 better than the field Why ↓Close ↑
1:53 faster on the clock, and the race was 0:12 faster for everyone, so 1:41 of it was this pair.
The fieldCompare these two →0:12 faster This pair1:53 faster -
Chicago14 Nov 2025Doubles Open · Women1:23:02479/1539Beat 69%
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Chicago25 Jan 2020Doubles Open · Women1:25:3217/26Beat 35%