Progress against the field
From Birmingham 2024 to Birmingham 2026, Rachel Halsall has moved with the field: what changed on the clock changed for everyone.
The clock says 11:44 faster, but the races themselves got 11:38 quicker for everyone.
The longest gap between two races compared here, 331 days between London Excel 2025 and Birmingham 2026, cost 1:16 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
7 races · 7 events
-
Birmingham31 Oct 2026Individual Open · Women1:22:53 PB214/887Beat 76%
↑ 331 days after London Excel 2025 1:16 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:21 faster on the clock looks better than it was: the race was 1:37 faster for everyone, which leaves this 1:16 behind the field.
The fieldCompare these two →1:37 faster This athlete0:21 faster -
Barcelona14 May 2026Doubles Open · Mixed1:16:44 PB401/1013Beat 60%
-
London Excel4 Dec 2025Individual Open · Women1:23:14314/1379Beat 77%
↑ 314 days after Manchester 2025 3:34 better than the field Why ↓Close ↑
3:34 better than the field: 7:45 faster on the clock, against 4:11 faster for everyone.
The fieldCompare these two →4:11 faster This athlete7:45 faster -
Glasgow12 Mar 2025Doubles Open · Women1:19:31 PB199/796Beat 75%
-
Manchester24 Jan 2025Individual Open · Women1:30:59247/539Beat 54%
↑ 56 days after London 2024 0:00 better than the field Why ↓Close ↑
Moved with the field: 3:00 faster on the clock, against 3:00 faster for everyone.
The fieldCompare these two →3:00 faster This athlete3:00 faster -
London29 Nov 2024Individual Open · Women1:33:59427/940Beat 55%
↑ 35 days after Birmingham 2024 2:12 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:38 faster on the clock, yet the race was 2:50 faster for everyone, so 2:12 was lost on the field.
The fieldCompare these two →2:50 faster This athlete0:38 faster -
Birmingham25 Oct 2024Individual Open · Women1:34:37440/846Beat 48%