Progress against the field
Between Monterrey 2025 and Acapulco 2026, Roberto Arellano Leyva pulled 0:37 ahead of the field.
The clock says 10:46 faster, but the races themselves got 10:09 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
7 races · 6 events
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Acapulco4 Sep 2026Relay · Men1:00:399/20Beat 55%
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Acapulco4 Sep 2026Individual Open · Men1:09:45 PB61/1244Beat 95%
↑ 517 days after Monterrey 2025 0:37 better than the field Why ↓Close ↑
10:46 faster on the clock, and the race was 10:09 faster for everyone, so 0:37 of it was this athlete.
The fieldCompare these two →10:09 faster This athlete10:46 faster -
Monterrey18 Apr 2026Relay · Men56:349/47Beat 81%
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Acapulco6 Sep 2025Doubles Open · Men1:03:22 PB30/425Beat 93%
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Monterrey5 Apr 2025Individual Open · Men1:20:31123/750Beat 84%
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Ciudad de Mexico9 Nov 2024Individual Pro · Men1:31:34 PB76/237Beat 68%
↑ 203 days after Mexico City 2024 0:27 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:50 faster on the clock looks better than it was: the race was 5:17 faster for everyone, which leaves this 0:27 behind the field.
The fieldCompare these two →5:17 faster This athlete4:50 faster -
Mexico City20 Apr 2024Individual Pro · Men1:36:2470/151Beat 54%