Progress against the field
Between Bilbao 2025 and London Olympia 2026, Jason Roberts lost 0:39 to the field.
The clock says 5:28 faster, but the races themselves got 6:07 quicker for everyone.
The longest gap between two races compared here, 298 days between Cardiff 2025 and London Olympia 2026, cost 3:33 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
4 races · 4 events
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London Olympia24 Mar 2026Individual Open · Men1:18:10240/716Beat 67%
↑ 298 days after Cardiff 2025 3:33 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:35 faster on the clock, yet the race was 5:08 faster for everyone, so 3:33 was lost on the field.
The fieldCompare these two →5:08 faster This athlete1:35 faster -
Cardiff30 May 2025Individual Open · Men1:19:45598/1401Beat 57%
↑ 27 days after London 2025 1:28 worse than the field Why ↓Close ↑
2:28 slower on the clock in a race that was 1:00 slower for everyone: 1:28 lost to the field.
The fieldCompare these two →1:00 slower This athlete2:28 slower -
London3 May 2025Individual Open · Men1:17:17 PB689/1917Beat 64%
↑ 77 days after Bilbao 2025 4:22 better than the field Why ↓Close ↑
6:21 faster on the clock, and the race was 1:59 faster for everyone, so 4:22 of it was this athlete.
The fieldCompare these two →1:59 faster This athlete6:21 faster -
Bilbao15 Feb 2025Individual Open · Men1:23:38228/416Beat 45%