Progress against the field
Between London 2023 and Birmingham 2024, Jordan Halliday pulled 5:58 ahead of the field.
The clock says 8:40 faster, but the races themselves got 2:42 quicker for everyone.
The largest gain on the field came from London 2023 → Copenhagen 2024: 6:29 in 118 days.
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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Manchester21 Jan 2026Individual Pro · MenDNF—
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London Excel4 Dec 2025Individual Pro · Men1:15:21 PB233/467Beat 50%
↑ 43 days after Birmingham 2025 0:19 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:36 faster on the clock looks better than it was: the race was 1:55 faster for everyone, which leaves this 0:19 behind the field.
The fieldCompare these two →1:55 faster This athlete1:36 faster -
Birmingham22 Oct 2025Individual Pro · Men1:16:5784/141Beat 40%
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Birmingham25 Oct 2024Individual Open · Men1:15:54412/1916Beat 79%
↑ 216 days after Copenhagen 2024 0:31 worse than the field Why ↓Close ↑
0:31 behind the field: 2:26 slower on the clock, against 1:55 slower for everyone.
The fieldCompare these two →1:55 slower This athlete2:26 slower -
Copenhagen23 Mar 2024Individual Open · Men1:13:28 PB165/686Beat 76%
↑ 118 days after London 2023 6:29 better than the field Why ↓Close ↑
11:06 faster on the clock, and the race was 4:37 faster for everyone, so 6:29 of it was this athlete.
The fieldCompare these two →4:37 faster This athlete11:06 faster -
London26 Nov 2023Individual Open · Men1:24:34842/1865Beat 55%