Progress against the field
From Glasgow 2024 to Birmingham 2026, Chris Grieveson got 3:50 faster than the field.
Over the same races everyone got 16:29 quicker, so 20:19 faster on the clock looks better than it was.
The longest gap between two races compared here, 328 days between Glasgow 2024 and Manchester 2025, still ended 6:23 ahead of 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
8 races · 8 events
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Birmingham31 Oct 2026Individual Open · Men1:06:58 PB45/359Beat 88%
↑ 234 days after Glasgow 2026 1:21 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:33 faster on the clock, yet the race was 2:54 faster for everyone, so 1:21 was lost on the field.
The fieldCompare these two →2:54 faster This athlete1:33 faster -
Glasgow11 Mar 2026Individual Open · Men1:08:3148/613Beat 92%
↑ 49 days after Manchester 2026 0:14 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:11 faster on the clock, yet the race was 2:25 faster for everyone, so 0:14 was lost on the field.
The fieldCompare these two →2:25 faster This athlete2:11 faster -
Manchester21 Jan 2026Individual Open · Men1:10:42232/1463Beat 84%
↑ 91 days after Birmingham 2025 0:52 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:11 faster on the clock looks better than it was: the race was 1:03 faster for everyone, which leaves this 0:52 behind the field.
The fieldCompare these two →1:03 faster This athlete0:11 faster -
London Excel4 Dec 2025Doubles Open · Mixed1:07:33 PB182/1474Beat 88%
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Birmingham22 Oct 2025Individual Open · Men1:10:53268/1821Beat 85%
↑ 224 days after Glasgow 2025 1:47 better than the field Why ↓Close ↑
2:50 faster on the clock, and the race was 1:03 faster for everyone, so 1:47 of it was this athlete.
The fieldCompare these two →1:03 faster This athlete2:50 faster -
Glasgow12 Mar 2025Individual Open · Men1:13:43395/1445Beat 73%
↑ 47 days after Manchester 2025 1:53 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:21 faster on the clock looks better than it was: the race was 3:14 faster for everyone, which leaves this 1:53 behind the field.
The fieldCompare these two →3:14 faster This athlete1:21 faster -
Manchester24 Jan 2025Individual Open · Men1:15:04372/1191Beat 69%
↑ 328 days after Glasgow 2024 6:23 better than the field Why ↓Close ↑
6:23 better than the field: 12:13 faster on the clock, against 5:50 faster for everyone.
The fieldCompare these two →5:50 faster This athlete12:13 faster -
Glasgow2 Mar 2024Individual Open · Men1:27:17943/1784Beat 47%