Progress against the field
Between London 2022 and London 2025, Jack Da Costa lost 2:12 to the field.
Over the same races everyone got 8:17 quicker, so 6:05 faster on the clock looks better than it was.
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
-
London Excel4 Dec 2025Individual Pro · Men1:21:02 PB320/467Beat 32%
-
London3 May 2025Individual Open · Men1:19:06 PB783/1917Beat 59%
↑ 896 days after London 2022 2:12 worse than the field Faster on the clock, behind the field Why ↓Close ↑
6:05 faster on the clock looks better than it was: the race was 8:17 faster for everyone, which leaves this 2:12 behind the field.
The fieldCompare these two →8:17 faster This athlete6:05 faster -
Rotterdam27 Feb 2025Individual Pro · Men1:31:1357/72Beat 21%
-
London19 Nov 2022Individual Open · Men1:25:11356/865Beat 59%