Progress against the field
From Chicago 2025 to Miami 2026, Simon Serna Zapata got 1:48 faster than the field.
The clock says 6:00 faster, but the races themselves got 4:12 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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Miami3 Apr 2026Individual Open · Men1:17:01 PB291/1462Beat 80%
↑ 140 days after Chicago 2025 1:48 better than the field Why ↓Close ↑
1:48 better than the field: 6:00 faster on the clock, against 4:12 faster for everyone.
The fieldCompare these two →4:12 faster This athlete6:00 faster -
Chicago14 Nov 2025Individual Open · Men1:23:01455/1621Beat 72%