Progress against the field
Riho Maruyama has gained 1:49 on the field from Boston 2025 to New York 2026.
The clock says 0:38 slower, but the races themselves got 2:27 slower for everyone.
The biggest step was Boston 2025 → Phoenix 2026: 4:16 on the field in 125 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. The summary above covers Individual Pro · Women, the one raced most; every comparison is in the list below.
Every race
10 races · 7 events
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Salt Lake City19 Sep 2026Doubles Open · Mixed1:14:11 PB210/1438Beat 85%
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Salt Lake City19 Sep 2026Individual Open · Women1:21:4554/412Beat 87%
↑ 595 days after Las Vegas 2025 3:29 worse than the field Why ↓Close ↑
6:04 slower on the clock in a race that was 2:35 slower for everyone: 3:29 lost to the field.
The fieldCompare these two →2:35 slower This athlete6:04 slower -
Salt Lake City19 Sep 2026Relay · Mixed1:13:0413/80Beat 84%
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New York28 May 2026Individual Pro · Women1:19:5730/182Beat 84%
↑ 119 days after Phoenix 2026 2:27 worse than the field Why ↓Close ↑
5:26 slower on the clock in a race that was 2:59 slower for everyone: 2:27 lost to the field.
The fieldCompare these two →2:59 slower This athlete5:26 slower -
Las Vegas20 Feb 2026Doubles Open · Women1:09:5752/1898Beat 97%
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Phoenix29 Jan 2026Individual Pro · Women1:14:31 PB78/294Beat 74%
↑ 125 days after Boston 2025 4:16 better than the field Why ↓Close ↑
4:48 faster on the clock, and the race was 0:32 faster for everyone, so 4:16 of it was this athlete.
The fieldCompare these two →0:32 faster This athlete4:48 faster -
Phoenix29 Jan 2026Doubles Open · Women1:02:29 PB1/529Beat 100%
↑ 69 days after Dallas 2025, with Kate Hutchinson 0:00 better than the field Why ↓Close ↑
2:29 faster on the clock, and the race was 2:29 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →2:29 faster This pair2:29 faster -
Dallas21 Nov 2025Doubles Open · Women1:04:5811/1529Beat 99%
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Boston26 Sep 2025Individual Pro · Women1:19:1961/159Beat 62%
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Las Vegas1 Feb 2025Individual Open · Women1:15:41 PB15/326Beat 95%