Progress against the field
Between Birmingham 2025 and Birmingham 2026, David Mason lost 2:51 to the field.
Over the same races everyone got 4:47 quicker, so 1:56 faster on the clock looks better than it was.
283 days between Manchester 2026 and Birmingham 2026 is the longest gap compared here, and the second race was 14:05 better than 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
4 races · 4 events
-
Birmingham31 Oct 2026Individual Open · Men1:54:53 PB1243/1442Beat 14%
↑ 283 days after Manchester 2026 14:05 better than the field Why ↓Close ↑
14:05 better than the field: 17:49 faster on the clock, against 3:44 faster for everyone.
The fieldCompare these two →3:44 faster This athlete17:49 faster -
Manchester21 Jan 2026Individual Open · Men2:12:42519/551Beat 6%
↑ 91 days after Birmingham 2025 16:56 worse than the field Why ↓Close ↑
16:56 behind the field: 15:53 slower on the clock, against 1:03 faster for everyone.
The fieldCompare these two →1:03 faster This athlete15:53 slower -
Birmingham22 Oct 2025Individual Open · Men1:56:491707/1821Beat 6%
-
Stockholm7 Dec 2024Doubles Open · Men1:08:29 PB85/293Beat 71%