Progress against the field
Bryton Castrillo has dropped 2:06 behind the field from New York 2026 to Boston 2026.
Over the same races everyone got 3:55 quicker, so 1:49 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
4 races · 3 events
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Boston8 Oct 2026Individual Open · Women1:45:22 PB331/475Beat 30%
↑ 133 days after New York 2026 2:06 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:49 faster on the clock, yet the race was 3:55 faster for everyone, so 2:06 was lost on the field.
The fieldCompare these two →3:55 faster This athlete1:49 faster -
Boston8 Oct 2026Doubles Open · Women1:37:57462/691Beat 33%
↑ 188 days after Miami 2026, with Nancy Castelli 5:06 worse than the field Why ↓Close ↑
5:06 behind the field: 2:51 slower on the clock, against 2:15 faster for everyone.
The fieldCompare these two →2:15 faster This pair2:51 slower -
New York28 May 2026Individual Open · Women1:47:11636/1098Beat 42%
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Miami3 Apr 2026Doubles Open · Women1:35:06 PB597/1037Beat 42%