Progress against the field
Between Puebla 2026 and Mexico City 2026, Margarita Romero Sierra kept pace with the field.
Over the same races everyone got 8:18 quicker, so 8:19 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.
Every race
3 races · 2 events
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Mexico City29 Oct 2026Individual Open · Women1:32:49 PB189/1301Beat 86%
↑ 166 days after Puebla 2026 0:01 better than the field Why ↓Close ↑
Moved with the field: 8:19 faster on the clock, against 8:18 faster for everyone.
The fieldCompare these two →8:18 faster This athlete8:19 faster -
Puebla16 May 2026Relay · Women1:19:1613/62Beat 79%
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Puebla16 May 2026Individual Open · Women1:41:08268/853Beat 69%