Progress against the field
From Houston 2026 to Boston 2026, the field gained 3:45 on Jonathan Alsfeld.
The clock says 1:16 faster, but the races themselves got 5:01 quicker for everyone.
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
5 races · 4 events
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Boston8 Oct 2026Doubles Open · Mixed1:38:13 PB839/1096Beat 23%
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Boston8 Oct 2026Individual Open · Men1:29:11 PB105/250Beat 58%
↑ 147 days after Ottawa 2026 0:38 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:42 faster on the clock looks better than it was: the race was 3:20 faster for everyone, which leaves this 0:38 behind the field.
The fieldCompare these two →3:20 faster This athlete2:42 faster -
Ottawa14 May 2026Individual Open · Men1:31:53123/281Beat 56%
↑ 49 days after Houston 2026 3:07 worse than the field Why ↓Close ↑
1:26 slower on the clock in a race that was 1:41 faster for everyone: 3:07 lost to the field.
The fieldCompare these two →1:41 faster This athlete1:26 slower -
Houston26 Mar 2026Individual Open · Men1:30:27552/1243Beat 56%
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Boston26 Sep 2025Doubles Open · Men1:17:50 PB381/734Beat 48%