Progress against the field
From Yokohama 2025 to Chiba 2026, 哲生 古川 got 8:44 faster than the field.
The clock says 19:49 faster, but the races themselves got 11:05 quicker for everyone.
The largest gain on the field came from Singapore 2026 → Chiba 2026: 14:43 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.
Every race
4 races · 4 events
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Chiba6 Aug 2026Individual Open · Men1:37:35 PB565/927Beat 39%
↑ 125 days after Singapore 2026 14:43 better than the field Why ↓Close ↑
14:43 better than the field: 22:25 faster on the clock, against 7:42 faster for everyone.
The fieldCompare these two →7:42 faster This athlete22:25 faster -
Singapore3 Apr 2026Individual Open · Men2:00:00829/1183Beat 30%
↑ 63 days after Osaka 2026 17:33 worse than the field Why ↓Close ↑
17:33 behind the field: 18:30 slower on the clock, against 0:57 slower for everyone.
The fieldCompare these two →0:57 slower This athlete18:30 slower -
Osaka30 Jan 2026Individual Open · Men1:41:30745/1119Beat 33%
↑ 174 days after Yokohama 2025 11:34 better than the field Why ↓Close ↑
11:34 better than the field: 15:54 faster on the clock, against 4:20 faster for everyone.
The fieldCompare these two →4:20 faster This athlete15:54 faster -
Yokohama9 Aug 2025Individual Open · Men1:57:24593/718Beat 17%