Progress against the field
Between Boston 2025 and New York 2026, Jim Shea pulled 0:58 ahead of the field.
Over the same races everyone got 2:43 quicker, so 3:41 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
3 races · 3 events
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New York28 May 2026Individual Open · Men1:55:48 PB976/1067Beat 9%
↑ 167 days after Anaheim 2025 0:24 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:47 faster on the clock, yet the race was 6:11 faster for everyone, so 0:24 was lost on the field.
The fieldCompare these two →6:11 faster This athlete5:47 faster -
Anaheim12 Dec 2025Individual Open · Men2:01:351557/1835Beat 15%
↑ 77 days after Boston 2025 1:22 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
2:06 slower on the clock, but the race was 3:28 slower for everyone, so this was 1:22 better than the field.
The fieldCompare these two →3:28 slower This athlete2:06 slower -
Boston26 Sep 2025Individual Open · Men1:59:291327/1463Beat 9%