Progress against the field
From Birmingham 2025 to Birmingham 2026, Riley Chalfen got 11:26 faster than the field.
The clock says 15:25 faster, but the races themselves got 3:59 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
7 races · 7 events
-
Birmingham31 Oct 2026Individual Open · Men1:22:40 PB330/693Beat 52%
↑ 374 days after Birmingham 2025 11:26 better than the field Why ↓Close ↑
15:25 faster on the clock, and the race was 3:59 faster for everyone, so 11:26 of it was this athlete.
The fieldCompare these two →3:59 faster This athlete15:25 faster -
Berlin22 May 2026Doubles Open · Mixed1:23:25 PB357/530Beat 33%
-
London Olympia24 Mar 2026Doubles Open · Men1:04:52 PB190/813Beat 77%
-
Glasgow11 Mar 2026Doubles Open · Men1:14:10489/917Beat 47%
↑ 312 days after London 2025, with Josh Bond 9:10 better than the field Why ↓Close ↑
8:53 faster on the clock in a race that was 0:17 slower for everyone: 9:10 better than the field.
The fieldCompare these two →0:17 slower This pair8:53 faster -
London Excel4 Dec 2025Doubles Open · Men1:18:151337/1815Beat 26%
-
Birmingham22 Oct 2025Individual Open · Men1:38:051419/1821Beat 22%
-
London3 May 2025Doubles Open · Men1:23:03871/1010Beat 14%