Progress against the field
Between Guadalajara 2026 and Mexico City 2026, Alfredo Belmont Rivera pulled 2:01 ahead of the field.
The clock says 8:33 faster, but the races themselves got 6:32 quicker for everyone.
The largest gain on the field came from Puebla 2026 → Mexico City 2026: 12:11 in 166 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
3 races · 3 events
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Mexico City29 Oct 2026Individual Open · Men1:38:26 PB725/1504Beat 52%
↑ 166 days after Puebla 2026 12:11 better than the field Why ↓Close ↑
12:11 better than the field: 20:55 faster on the clock, against 8:44 faster for everyone.
The fieldCompare these two →8:44 faster This athlete20:55 faster -
Puebla16 May 2026Individual Open · Men1:59:211048/1412Beat 26%
↑ 98 days after Guadalajara 2026 10:10 worse than the field Why ↓Close ↑
12:22 slower on the clock in a race that was 2:12 slower for everyone: 10:10 lost to the field.
The fieldCompare these two →2:12 slower This athlete12:22 slower -
Guadalajara7 Feb 2026Individual Open · Men1:46:59949/1361Beat 30%