Progress against the field
Between Monterrey 2025 and Mexico City 2025, Mario Alberto Millan Jandete and Ari Daniel Kferman Alfaro lost 4:14 to the field.
The races themselves barely changed, so 3:57 slower on the clock is the real picture.
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
5 races · 5 events
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Acapulco4 Sep 2026Doubles Open · Mixed1:39:06 PB628/933Beat 33%
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Madrid27 Nov 2025Individual Open · Men1:34:09 PB944/1312Beat 28%
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Mexico City7 Nov 2025Doubles Open · Men1:22:40326/758Beat 57%
↑ 62 days after Acapulco 2025, with Ari Daniel Kferman Alfaro 0:08 better than the field Why ↓Close ↑
Moved with the field: 1:39 slower on the clock, against 1:47 slower for everyone.
The fieldCompare these two →1:47 slower This pair1:39 slower -
Acapulco6 Sep 2025Doubles Open · Men1:21:01244/425Beat 43%
↑ 154 days after Monterrey 2025, with Ari Daniel Kferman Alfaro 4:22 worse than the field Why ↓Close ↑
2:18 slower on the clock in a race that was 2:04 faster for everyone: 4:22 lost to the field.
The fieldCompare these two →2:04 faster This pair2:18 slower -
Monterrey5 Apr 2025Doubles Open · Men1:18:43 PB208/438Beat 53%