Progress against the field
Between Chicago - North American Open Championship 2023 and Chicago 2025, David Koehler lost 2:43 to the field.
The clock says 3:38 faster, but the races themselves got 6:21 quicker for everyone.
The longest gap between two races compared here, 371 days between Chicago 2023 and Chicago Navy Pier 2024, still ended 1:04 ahead of 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
7 races · 5 events
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Chicago14 Nov 2025Doubles Open · Men1:02:33 PB42/905Beat 95%
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Chicago14 Nov 2025Individual Open · Men1:13:09133/1621Beat 92%
↑ 363 days after Chicago Navy Pier 2024 3:57 worse than the field Why ↓Close ↑
3:57 behind the field: 3:31 slower on the clock, against 0:26 faster for everyone.
The fieldCompare these two →0:26 faster This athlete3:31 slower -
Las Vegas1 Feb 2025Doubles Open · Mixed1:51:46 PB352/386Beat 9%
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Las Vegas1 Feb 2025Relay · Mixed1:19:2717/41Beat 59%
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Chicago Navy Pier16 Nov 2024Individual Open · Men1:09:38 PB54/814Beat 93%
↑ 371 days after Chicago 2023 1:04 better than the field Why ↓Close ↑
1:04 better than the field: 3:41 faster on the clock, against 2:37 faster for everyone.
The fieldCompare these two →2:37 faster This athlete3:41 faster -
Chicago11 Nov 2023Individual Open · Men1:13:1958/469Beat 88%
↑ 273 days after Chicago - North American Open Championship 2023 0:10 better than the field Why ↓Close ↑
0:10 better than the field: 3:28 faster on the clock, against 3:18 faster for everyone.
The fieldCompare these two →3:18 faster This athlete3:28 faster -
Chicago - North American Open Championship11 Feb 2023Individual Open · Men1:16:4783/354Beat 77%