Progress against the field
Between Las Vegas 2025 and Houston 2026, Brenda Alfonso lost 3:30 to the field.
The clock says 4:23 faster, but the races themselves got 7:53 quicker for everyone.
The longest gap between two races compared here, 293 days between Las Vegas 2025 and Dallas 2025, cost 4:42 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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Houston26 Mar 2026Individual Open · Women1:21:03 PB79/961Beat 92%
↑ 125 days after Dallas 2025 1:12 better than the field Why ↓Close ↑
1:12 better than the field: 4:17 faster on the clock, against 3:05 faster for everyone.
The fieldCompare these two →3:05 faster This athlete4:17 faster -
Dallas21 Nov 2025Individual Open · Women1:25:20340/1494Beat 77%
↑ 293 days after Las Vegas 2025 4:42 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:06 faster on the clock, yet the race was 4:48 faster for everyone, so 4:42 was lost on the field.
The fieldCompare these two →4:48 faster This athlete0:06 faster -
Las Vegas1 Feb 2025Individual Open · Women1:25:2670/326Beat 79%
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Dallas23 Nov 2024Doubles Open · Women1:19:12 PB86/553Beat 84%
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Houston16 Mar 2024Individual Open · Women1:31:2699/239Beat 59%
↑ 119 days after Dallas 2023 1:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:21 faster on the clock looks better than it was: the race was 1:34 faster for everyone, which leaves this 1:13 behind the field.
The fieldCompare these two →1:34 faster This athlete0:21 faster -
Dallas18 Nov 2023Individual Open · Women1:31:47131/267Beat 51%