Progress against the field
Between Chicago 2021 and Chicago 2025, Derek Leiter lost 9:55 to the field.
Over the same races everyone got 15:43 quicker, so 5:48 faster on the clock looks better than it was.
The largest gain on the field came from Chicago 2022 → Chicago 2023: 2:43 in 371 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
5 races · 5 events
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Chicago14 Nov 2025Individual Open · Men1:28:26689/1621Beat 58%
↑ 363 days after Chicago Navy Pier 2024 1:46 worse than the field Why ↓Close ↑
1:20 slower on the clock in a race that was 0:26 faster for everyone: 1:46 lost to the field.
The fieldCompare these two →0:26 faster This athlete1:20 slower -
Chicago Navy Pier16 Nov 2024Individual Open · Men1:27:06389/814Beat 52%
↑ 371 days after Chicago 2023 10:52 worse than the field Why ↓Close ↑
8:15 slower on the clock in a race that was 2:37 faster for everyone: 10:52 lost to the field.
The fieldCompare these two →2:37 faster This athlete8:15 slower -
Chicago11 Nov 2023Individual Open · Men1:18:51 PB117/469Beat 75%
↑ 371 days after Chicago 2022 2:43 better than the field Why ↓Close ↑
2:43 better than the field: 9:05 faster on the clock, against 6:22 faster for everyone.
The fieldCompare these two →6:22 faster This athlete9:05 faster -
Chicago5 Nov 2022Individual Open · Men1:27:5686/233Beat 63%
↑ 497 days after Chicago 2021 0:00 better than the field Why ↓Close ↑
Moved with the field: 6:18 faster on the clock, against 6:18 faster for everyone.
The fieldCompare these two →6:18 faster This athlete6:18 faster -
Chicago26 Jun 2021Individual Open · Men1:34:1441/97Beat 58%