Progress against the field
From Chicago - North American Open Championship 2023 to Chicago 2025, the field gained 5:17 on Joe Riddle.
Over the same races everyone got 2:58 quicker, so 2:19 slower on the clock looks better than it was.
The longest gap between two races compared here, 734 days between Chicago 2023 and Chicago 2025, cost 5:16 on 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 Open · Men1:38:491062/1621Beat 35%
↑ 734 days after Chicago 2023 5:16 worse than the field Why ↓Close ↑
5:36 slower on the clock in a race that was 0:20 slower for everyone: 5:16 lost to the field.
The fieldCompare these two →0:20 slower This athlete5:36 slower -
Chicago11 Nov 2023Individual Open · Men1:33:13 PB282/469Beat 40%
↑ 273 days after Chicago - North American Open Championship 2023 0:01 worse than the field Why ↓Close ↑
3:17 faster on the clock, and the race was 3:18 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →3:18 faster This athlete3:17 faster -
Chicago - North American Open Championship11 Feb 2023Individual Open · Men1:36:30225/354Beat 36%