Progress against the field
From Birmingham 2025 to Cardiff 2026, Harrison Jack got 13:50 faster than the field.
The clock says 17:50 faster, but the races themselves got 4:00 quicker for everyone.
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
5 races · 5 events
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Birmingham31 Oct 2026Doubles Open · Men1:08:27 PB208/605Beat 66%
↑ 701 days after London 2024, with Elliot Harrison 10:31 better than the field Why ↓Close ↑
10:31 better than the field: 13:18 faster on the clock, against 2:47 faster for everyone.
The fieldCompare these two →2:47 faster This pair13:18 faster -
Cardiff29 Apr 2026Individual Open · Men1:24:28 PB196/365Beat 46%
↑ 189 days after Birmingham 2025 13:50 better than the field Why ↓Close ↑
17:50 faster on the clock, and the race was 4:00 faster for everyone, so 13:50 of it was this athlete.
The fieldCompare these two →4:00 faster This athlete17:50 faster -
Birmingham22 Oct 2025Individual Open · Men1:42:181506/1821Beat 17%
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London29 Nov 2024Doubles Open · Men1:21:45368/444Beat 17%
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Rimini1 Jun 2024Individual Pro · Men1:29:02 PB109/200Beat 46%