Progress against the field
Between New York 2025 and Las Vegas 2026, David Fonseca kept pace with the field.
Over the same races everyone got 4:47 quicker, so 4:34 faster on the clock looks better than it was.
The largest gain on the field came from Boston 2025 → Dallas 2025: 8:05 in 56 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
5 races · 5 events
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Houston26 Mar 2026Doubles Open · Mixed1:13:20 PB168/1215Beat 86%
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Las Vegas20 Feb 2026Individual Open · Men1:31:31846/1739Beat 51%
↑ 91 days after Dallas 2025 8:02 worse than the field Why ↓Close ↑
8:02 behind the field: 5:53 slower on the clock, against 2:09 faster for everyone.
The fieldCompare these two →2:09 faster This athlete5:53 slower -
Dallas21 Nov 2025Individual Open · Men1:25:38 PB808/2078Beat 61%
↑ 56 days after Boston 2025 8:05 better than the field Why ↓Close ↑
8:05 better than the field: 9:08 faster on the clock, against 1:03 faster for everyone.
The fieldCompare these two →1:03 faster This athlete9:08 faster -
Boston26 Sep 2025Individual Open · Men1:34:46927/1463Beat 37%
↑ 119 days after New York 2025 0:16 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:19 faster on the clock, yet the race was 1:35 faster for everyone, so 0:16 was lost on the field.
The fieldCompare these two →1:35 faster This athlete1:19 faster -
New York30 May 2025Individual Open · Men1:36:051079/1462Beat 26%