Progress against the field
Between Dallas 2025 and Phoenix 2026, Kevyn Marshall pulled 2:06 ahead of the field.
Over the same races everyone got 3:53 quicker, so 5:59 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. 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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Phoenix29 Jan 2026Individual Open · Women2:10:28516/550Beat 6%
↑ 69 days after Dallas 2025 2:06 better than the field Why ↓Close ↑
5:59 faster on the clock, and the race was 3:53 faster for everyone, so 2:06 of it was this athlete.
The fieldCompare these two →3:53 faster This athlete5:59 faster -
Dallas21 Nov 2025Individual Open · Women2:16:271395/1494Beat 7%
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Chicago14 Nov 2025Individual Open · Women1:56:02974/1127Beat 14%
↑ 49 days after Boston 2025 3:49 worse than the field Why ↓Close ↑
0:56 slower on the clock in a race that was 2:53 faster for everyone: 3:49 lost to the field.
The fieldCompare these two →2:53 faster This athlete0:56 slower -
Boston26 Sep 2025Individual Open · Women1:55:06 PB1064/1290Beat 18%
↑ 119 days after New York 2025 13:53 better than the field Why ↓Close ↑
16:14 faster on the clock, and the race was 2:21 faster for everyone, so 13:53 of it was this athlete.
The fieldCompare these two →2:21 faster This athlete16:14 faster -
New York30 May 2025Individual Open · Women2:11:20421/450Beat 6%