Progress against the field
From Boston 2025 to Boston 2026, Aissa Beaton got 7:16 faster than the field.
The clock says 10:38 faster, but the races themselves got 3:22 quicker for everyone.
The largest gain on the field came from New York 2026 → Boston 2026: 7:43 in 133 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
7 races · 5 events
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Boston8 Oct 2026Individual Open · Women1:43:49 PB258/452Beat 43%
↑ 133 days after New York 2026 7:43 better than the field Why ↓Close ↑
7:43 better than the field: 11:38 faster on the clock, against 3:55 faster for everyone.
The fieldCompare these two →3:55 faster This athlete11:38 faster -
Washington DC3 Sep 2026Doubles Pro · Women1:24:04 PB125/223Beat 44%
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New York28 May 2026Relay · Women1:27:2967/154Beat 57%
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New York28 May 2026Doubles Open · Women1:42:57 PB876/1144Beat 23%
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New York28 May 2026Individual Open · Women1:55:27720/1061Beat 32%
↑ 244 days after Boston 2025 0:27 worse than the field Why ↓Close ↑
1:00 slower on the clock in a race that was 0:33 slower for everyone: 0:27 lost to the field.
The fieldCompare these two →0:33 slower This athlete1:00 slower -
Houston26 Mar 2026Doubles Pro · Women1:32:32212/359Beat 41%
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Boston26 Sep 2025Individual Open · Women1:54:271052/1290Beat 18%