Progress against the field
From Cardiff 2025 to Birmingham 2026, Justin Roberts got 1:07 faster than the field.
The clock says 7:42 faster, but the races themselves got 6:35 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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Birmingham31 Oct 2026Individual Open · Men1:11:29 PB107/693Beat 85%
↑ 374 days after Birmingham 2025 0:27 better than the field Why ↓Close ↑
0:27 better than the field: 4:26 faster on the clock, against 3:59 faster for everyone.
The fieldCompare these two →3:59 faster This athlete4:26 faster -
Birmingham22 Oct 2025Individual Open · Men1:15:55137/523Beat 74%
↑ 145 days after Cardiff 2025 0:40 better than the field Why ↓Close ↑
0:40 better than the field: 3:16 faster on the clock, against 2:36 faster for everyone.
The fieldCompare these two →2:36 faster This athlete3:16 faster -
Cardiff30 May 2025Individual Open · Men1:19:11571/1401Beat 59%