Progress against the field
Between Chicago 2023 and Boston 2025, Guilherme Cheida pulled 14:56 ahead of the field.
Over the same races everyone got 6:25 quicker, so 21:21 faster 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 15:03 better than 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
4 races · 4 events
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Las Vegas20 Feb 2026Doubles Open · Mixed1:22:55 PB846/2139Beat 60%
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Boston26 Sep 2025Individual Open · Men1:08:43 PB75/1463Beat 95%
↑ 314 days after Chicago Navy Pier 2024 0:07 worse than the field Why ↓Close ↑
3:41 faster on the clock, and the race was 3:48 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →3:48 faster This athlete3:41 faster -
Chicago Navy Pier16 Nov 2024Individual Open · Men1:12:2490/814Beat 89%
↑ 371 days after Chicago 2023 15:03 better than the field Why ↓Close ↑
15:03 better than the field: 17:40 faster on the clock, against 2:37 faster for everyone.
The fieldCompare these two →2:37 faster This athlete17:40 faster -
Chicago11 Nov 2023Individual Open · Men1:30:04244/469Beat 48%