Progress against the field
Callum Jackson has dropped 1:00:37 behind the field from Birmingham 2022 to Glasgow 2025.
The clock says 48:58 slower, but the races themselves got 11:39 quicker for everyone.
The longest gap between two races compared here, 508 days between Birmingham 2023 and Glasgow 2025, cost 1:03:37 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
9 races · 7 events
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EMEA London Olympia24 Mar 2026Doubles Open · Men56:31 PB84/455Beat 82%
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Riga31 May 2025Doubles Open · Men59:5110/252Beat 96%
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Belgium5 Apr 2025Doubles Open · Men1:16:04508/898Beat 43%
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Glasgow12 Mar 2025Doubles Open · Men1:23:06787/947Beat 17%
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Glasgow12 Mar 2025Individual Open · Men2:00:241524/1588Beat 4%
↑ 508 days after Birmingham 2023 1:03:37 worse than the field Why ↓Close ↑
55:52 slower on the clock in a race that was 7:45 faster for everyone: 1:03:37 lost to the field.
The fieldCompare these two →7:45 faster This athlete55:52 slower -
Glasgow12 Mar 2025Relay · Men1:16:3133/42Beat 21%
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Birmingham21 Oct 2023Individual Open · Men1:04:3212/1182Beat 99%
↑ 252 days after Glasgow 2023 1:49 worse than the field Why ↓Close ↑
1:49 behind the field: 3:35 slower on the clock, against 1:46 slower for everyone.
The fieldCompare these two →1:46 slower This athlete3:35 slower -
Glasgow11 Feb 2023Individual Open · Men1:00:57 PB6/974Beat 99%
↑ 119 days after Birmingham 2022 4:49 better than the field Why ↓Close ↑
10:29 faster on the clock, and the race was 5:40 faster for everyone, so 4:49 of it was this athlete.
The fieldCompare these two →5:40 faster This athlete10:29 faster -
Birmingham15 Oct 2022Individual Open · Men1:11:2690/960Beat 91%