Progress against the field
Ana Maria Guerra Arellano has gained 1:21 on the field from Mexico City 2025 to Mexico City 2026.
The clock says 5:20 faster, but the races themselves got 3:59 quicker for everyone.
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
2 races · 2 events
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Mexico City29 Oct 2026Individual Pro · Women2:09:28 PB164/185Beat 11%
↑ 356 days after Mexico City 2025 1:21 better than the field Why ↓Close ↑
1:21 better than the field: 5:20 faster on the clock, against 3:59 faster for everyone.
The fieldCompare these two →3:59 faster This athlete5:20 faster -
Mexico City7 Nov 2025Individual Pro · Women2:14:48119/130Beat 9%