Progress against the field
Between Dallas 2024 and Boston 2025, Jamal Perry pulled 7:19 ahead of the field.
The clock says 15:17 faster, but the races themselves got 7:58 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
2 races · 2 events
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Boston26 Sep 2025Individual Open · Men1:27:23 PB664/1463Beat 55%
↑ 307 days after Dallas 2024 7:19 better than the field Why ↓Close ↑
7:19 better than the field: 15:17 faster on the clock, against 7:58 faster for everyone.
The fieldCompare these two →7:58 faster This athlete15:17 faster -
Dallas23 Nov 2024Individual Open · Men1:42:40661/929Beat 29%