Progress against the field
James Jackson has dropped 17:06 behind the field from Birmingham 2022 to Cardiff 2026.
Over the same races everyone got 13:26 quicker, so 3:40 slower on the clock looks better than it was.
The longest gap between two races compared here, 832 days between Birmingham 2022 and Manchester 2025, cost 12:07 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
12 races · 11 events
-
Birmingham31 Oct 2026Doubles Open · Mixed1:21:41625/1159Beat 46%
-
Cardiff29 Apr 2026Individual Open · Men1:26:57218/365Beat 40%
↑ 36 days after London Olympia 2026 8:26 better than the field Why ↓Close ↑
9:42 faster on the clock, and the race was 1:16 faster for everyone, so 8:26 of it was this athlete.
The fieldCompare these two →1:16 faster This athlete9:42 faster -
London Olympia24 Mar 2026Individual Open · Men1:36:39159/219Beat 27%
↑ 424 days after Manchester 2025 13:25 worse than the field Why ↓Close ↑
7:10 slower on the clock in a race that was 6:15 faster for everyone: 13:25 lost to the field.
The fieldCompare these two →6:15 faster This athlete7:10 slower -
Glasgow11 Mar 2026Doubles Open · Men1:14:49111/243Beat 54%
-
London Excel4 Dec 2025Doubles Open · Mixed1:22:13885/1474Beat 40%
-
London Excel4 Dec 2025Doubles Open · Men1:09:36906/2102Beat 57%
-
Birmingham22 Oct 2025Doubles Open · Mixed1:20:52 PB152/312Beat 51%
↑ 347 days after Manchester 2024, with Jess Dart 8:39 better than the field Why ↓Close ↑
10:41 faster on the clock, and the race was 2:02 faster for everyone, so 8:39 of it was this pair.
The fieldCompare these two →2:02 faster This pair10:41 faster -
Manchester24 Jan 2025Individual Open · Men1:29:29815/1191Beat 32%
↑ 832 days after Birmingham 2022 12:07 worse than the field Why ↓Close ↑
6:12 slower on the clock in a race that was 5:55 faster for everyone: 12:07 lost to the field.
The fieldCompare these two →5:55 faster This athlete6:12 slower -
Manchester9 Nov 2024Doubles Open · Mixed1:31:33341/410Beat 17%
-
Glasgow11 Feb 2023Doubles Open · Men1:09:24 PB149/343Beat 57%
-
Birmingham15 Oct 2022Individual Open · Men1:23:17391/960Beat 59%
-
KölnDate unknownIndividual Open · Men1:21:51 PB375/815Beat 54%