Progress against the field
From Boston 2025 to Boston 2026, the field gained 7:27 on Lilia Staszel.
The clock says 4:02 slower, but the races themselves got 3:25 quicker for everyone.
The longest gap between two races compared here, 230 days between Las Vegas 2026 and Boston 2026, cost 7:47 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
3 races · 3 events
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Boston8 Oct 2026Individual Open · Women1:32:59234/722Beat 68%
↑ 230 days after Las Vegas 2026 7:47 worse than the field Why ↓Close ↑
7:47 behind the field: 5:15 slower on the clock, against 2:32 faster for everyone.
The fieldCompare these two →2:32 faster This athlete5:15 slower -
Las Vegas20 Feb 2026Individual Open · Women1:27:44 PB482/1796Beat 73%
↑ 147 days after Boston 2025 0:20 better than the field Why ↓Close ↑
1:13 faster on the clock, and the race was 0:53 faster for everyone, so 0:20 of it was this athlete.
The fieldCompare these two →0:53 faster This athlete1:13 faster -
Boston26 Sep 2025Individual Open · Women1:28:57449/1290Beat 65%