Progress against the field
Ian Birch and Molly Birch have gained 6:59 on the field from Dallas 2025 to Salt Lake City 2026.
Over the same races everyone got 1:37 quicker, so 8:36 faster on the clock looks better than it was.
The longest gap between two races compared here, 188 days between Dallas 2025 and New York 2026, cost 7:31 on 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
4 races · 4 events
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Salt Lake City19 Sep 2026Doubles Open · Mixed1:29:37 PB761/1438Beat 47%
↑ 114 days after New York 2026, with Molly Birch 14:30 better than the field Why ↓Close ↑
14:10 faster on the clock in a race that was 0:20 slower for everyone: 14:30 better than the field.
The fieldCompare these two →0:20 slower This pair14:10 faster -
New York28 May 2026Doubles Open · Mixed1:43:47771/1034Beat 25%
↑ 188 days after Dallas 2025, with Molly Birch 7:31 worse than the field Why ↓Close ↑
7:31 behind the field: 5:34 slower on the clock, against 1:57 faster for everyone.
The fieldCompare these two →1:57 faster This pair5:34 slower -
Las Vegas20 Feb 2026Individual Open · Men1:34:46 PB981/1739Beat 44%
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Dallas21 Nov 2025Doubles Open · Mixed1:38:131154/1504Beat 23%