Progress against the field
Between Manchester 2023 and Glasgow 2025, James-Forbes Birnie lost 5:07 to the field.
The clock says 2:41 faster, but the races themselves got 7:48 quicker for everyone.
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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Glasgow11 Mar 2026Individual Open · MenDNF—
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Glasgow12 Mar 2025Individual Open · Men2:02:00 PB1407/1445Beat 3%
↑ 774 days after Manchester 2023 5:07 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:41 faster on the clock looks better than it was: the race was 7:48 faster for everyone, which leaves this 5:07 behind the field.
The fieldCompare these two →7:48 faster This athlete2:41 faster -
Manchester28 Jan 2023Individual Open · Men2:04:41607/649Beat 7%