Progress against the field
Between Heerenveen 2025 and Amsterdam 2026, Colm O’Brien pulled 1:30 ahead of the field.
Over the same races everyone got 6:17 quicker, so 7:47 faster on the clock looks better than it was.
The largest gain on the field came from Maastricht 2025 → Amsterdam 2026: 5:43 in 124 days.
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
4 races · 4 events
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Amsterdam21 Jan 2026Individual Open · Men1:24:57 PB257/570Beat 55%
↑ 124 days after Maastricht 2025 5:43 better than the field Why ↓Close ↑
13:42 faster on the clock, and the race was 7:59 faster for everyone, so 5:43 of it was this athlete.
The fieldCompare these two →7:59 faster This athlete13:42 faster -
Maastricht19 Sep 2025Individual Open · Men1:38:39943/1352Beat 30%
↑ 133 days after Heerenveen 2025 4:13 worse than the field Why ↓Close ↑
4:13 behind the field: 5:55 slower on the clock, against 1:42 slower for everyone.
The fieldCompare these two →1:42 slower This athlete5:55 slower -
Heerenveen9 May 2025Individual Open · Men1:32:44849/1217Beat 30%
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MelbourneDate unknownDoubles Open · Men1:05:23 PB44/387Beat 89%