Progress against the field
Mark Polzin has dropped 5:11 behind the field from Chicago 2023 to Chicago 2025.
Over the same races everyone got 4:25 quicker, so 0:46 slower on the clock looks better than it was.
363 days between Chicago Navy Pier 2024 and Chicago 2025 is the longest gap compared here, and the second race was 2:11 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
10 races · 10 events
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Chicago14 Nov 2025Individual Pro · Men1:03:1220/268Beat 93%
↑ 363 days after Chicago Navy Pier 2024 2:11 worse than the field Why ↓Close ↑
2:11 behind the field: 1:20 slower on the clock, against 0:51 faster for everyone.
The fieldCompare these two →0:51 faster This athlete1:20 slower -
Chicago Navy Pier16 Nov 2024Individual Pro · Men1:01:52 PB10/199Beat 95%
↑ 266 days after Fort Lauderdale 2024 2:30 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:22 faster on the clock, yet the race was 2:52 faster for everyone, so 2:30 was lost on the field.
The fieldCompare these two →2:52 faster This athlete0:22 faster -
Fort Lauderdale24 Feb 2024Individual Pro · Men1:02:143/106Beat 97%
↑ 105 days after Chicago 2023 0:30 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:12 faster on the clock, yet the race was 0:42 faster for everyone, so 0:30 was lost on the field.
The fieldCompare these two →0:42 faster This athlete0:12 faster -
Chicago11 Nov 2023Individual Pro · Men1:02:267/113Beat 94%
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Houston25 Feb 2023Individual Pro · Men1:05:245/69Beat 93%
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Chicago - North American Open Championship11 Feb 2023Individual Open · Men1:02:08 PB5/354Beat 99%
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Chicago5 Nov 2022Individual Pro · Men1:04:275/70Beat 93%
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Las Vegas14 May 2022Individual Pro · Men1:14:5766/263Beat 75%
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Dallas20 Nov 2021Individual Pro · Men1:10:164/62Beat 94%
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Chicago25 Jan 2020Individual Open · Men1:09:293/162Beat 98%