Progress against the field
From Chicago 2023 to Chicago 2025, the field gained 16:32 on Zech Jens.
Over the same races everyone got 2:29 quicker, so 14:03 slower on the clock looks better than it was.
371 days between Chicago 2023 and Chicago Navy Pier 2024 is the longest gap compared here, and the second race was 3:07 behind the field.
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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Chicago14 Nov 2025Individual Pro · Men1:49:14252/268Beat 6%
↑ 363 days after Chicago Navy Pier 2024 13:25 worse than the field Why ↓Close ↑
13:25 behind the field: 12:34 slower on the clock, against 0:51 faster for everyone.
The fieldCompare these two →0:51 faster This athlete12:34 slower -
Chicago Navy Pier16 Nov 2024Individual Pro · Men1:36:40166/199Beat 17%
↑ 371 days after Chicago 2023 3:07 worse than the field Why ↓Close ↑
3:07 behind the field: 1:29 slower on the clock, against 1:38 faster for everyone.
The fieldCompare these two →1:38 faster This athlete1:29 slower -
Chicago11 Nov 2023Individual Pro · Men1:35:11 PB93/113Beat 18%