Progress against the field
Rebecca Arend has dropped 10:54 behind the field from Las Vegas 2025 to Las Vegas 2026.
Over the same races everyone got 5:21 quicker, so 5:33 slower on the clock looks better than it was.
237 days between Las Vegas 2025 and Boston 2025 is the longest gap compared here, and the second race was 3:40 behind 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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Las Vegas20 Feb 2026Individual Open · Women1:40:30997/1796Beat 45%
↑ 147 days after Boston 2025 7:14 worse than the field Why ↓Close ↑
7:14 behind the field: 6:21 slower on the clock, against 0:53 faster for everyone.
The fieldCompare these two →0:53 faster This athlete6:21 slower -
Phoenix29 Jan 2026Individual Pro · Women2:00:35287/294Beat 2%
↑ 76 days after Chicago 2025 22:00 worse than the field Why ↓Close ↑
21:30 slower on the clock in a race that was 0:30 faster for everyone: 22:00 lost to the field.
The fieldCompare these two →0:30 faster This athlete21:30 slower -
Chicago14 Nov 2025Individual Pro · Women1:39:05 PB153/194Beat 21%
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Boston26 Sep 2025Individual Open · Women1:34:09 PB610/1290Beat 53%
↑ 237 days after Las Vegas 2025 3:40 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:48 faster on the clock looks better than it was: the race was 4:28 faster for everyone, which leaves this 3:40 behind the field.
The fieldCompare these two →4:28 faster This athlete0:48 faster -
Las Vegas1 Feb 2025Individual Open · Women1:34:57135/326Beat 59%