Progress against the field
Between Glasgow 2025 and Birmingham 2026, Chris Mathieson lost 3:12 to the field.
Over the same races everyone got 8:31 quicker, so 5:19 faster on the clock looks better than it was.
The longest gap between two races compared here, 315 days between Glasgow 2025 and Amsterdam 2026, cost 8:57 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
3 races · 3 events
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Birmingham31 Oct 2026Individual Open · Men1:34:16 PB979/1442Beat 32%
↑ 283 days after Amsterdam 2026 5:45 better than the field Why ↓Close ↑
5:45 better than the field: 9:29 faster on the clock, against 3:44 faster for everyone.
The fieldCompare these two →3:44 faster This athlete9:29 faster -
Amsterdam21 Jan 2026Individual Open · Men1:43:451442/1620Beat 11%
↑ 315 days after Glasgow 2025 8:57 worse than the field Why ↓Close ↑
4:10 slower on the clock in a race that was 4:47 faster for everyone: 8:57 lost to the field.
The fieldCompare these two →4:47 faster This athlete4:10 slower -
Glasgow12 Mar 2025Individual Open · Men1:39:351236/1445Beat 15%