Progress against the field
Between Boston 2025 and Washington DC 2026, Kenneth Lei pulled 9:44 ahead of the field.
Over the same races everyone got 5:39 quicker, so 15:23 faster on the clock looks better than it was.
The longest gap between two races compared here, 244 days between Boston 2025 and New York 2026, still ended 11:33 ahead of 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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Washington DC3 Sep 2026Individual Open · Men1:58:11 PB1254/1462Beat 14%
↑ 98 days after New York 2026 1:49 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:46 faster on the clock, yet the race was 3:35 faster for everyone, so 1:49 was lost on the field.
The fieldCompare these two →3:35 faster This athlete1:46 faster -
New York28 May 2026Individual Open · Men1:59:571000/1067Beat 6%
↑ 244 days after Boston 2025 11:33 better than the field Why ↓Close ↑
13:37 faster on the clock, and the race was 2:04 faster for everyone, so 11:33 of it was this athlete.
The fieldCompare these two →2:04 faster This athlete13:37 faster -
Boston26 Sep 2025Individual Open · Men2:13:341411/1463Beat 4%