Progress against the field
Shimpei Iwata has gained 3:14 on the field from Bangkok 1 2026 to Chiba 2026.
The clock says 6:29 faster, but the races themselves got 3:15 quicker for everyone.
The biggest step was Hong Kong 2026 → Chiba 2026: 4:57 on the field in 90 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 · Men, the one raced most; every comparison is in the list below.
Every race
19 races · 14 events
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Beijing10 Sep 2026Individual Pro · Men1:19:42111/339Beat 67%
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Shenzhen15 Aug 2026Relay · Men58:059/245Beat 96%
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Shenzhen15 Aug 2026Individual Open · Men1:35:43643/1284Beat 50%
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Shenzhen15 Aug 2026Doubles Pro · Men1:05:10 PB50/254Beat 80%
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Chiba6 Aug 2026Doubles Open · Mixed1:22:17 PB261/761Beat 66%
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Chiba6 Aug 2026Individual Pro · Men1:18:26 PB78/295Beat 74%
↑ 90 days after Hong Kong 2026 4:57 better than the field Why ↓Close ↑
4:57 better than the field: 5:42 faster on the clock, against 0:45 faster for everyone.
The fieldCompare these two →0:45 faster This athlete5:42 faster -
Hangzhou4 Jul 2026Doubles Open · Men1:02:47 PB37/483Beat 92%
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Hangzhou4 Jul 2026Doubles Pro · Men1:06:5032/142Beat 78%
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Hong Kong8 May 2026Individual Pro · Men1:24:08137/301Beat 55%
↑ 49 days after Bangkok 1 2026 1:43 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:47 faster on the clock, yet the race was 2:30 faster for everyone, so 1:43 was lost on the field.
The fieldCompare these two →2:30 faster This athlete0:47 faster -
Singapore3 Apr 2026Individual Open · Men1:13:18 PB39/1183Beat 97%
↑ 223 days after Beijing 2025 7:13 better than the field Why ↓Close ↑
7:13 better than the field: 7:55 faster on the clock, against 0:42 faster for everyone.
The fieldCompare these two →0:42 faster This athlete7:55 faster -
Bangkok 120 Mar 2026Doubles Open · Mixed1:30:21634/1445Beat 56%
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Bangkok 120 Mar 2026Individual Pro · Men1:24:55183/444Beat 59%
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Taipei28 Feb 2026Individual Pro · Men1:18:5867/164Beat 59%
↑ 29 days after Osaka 2026 0:14 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:24 faster on the clock looks better than it was: the race was 2:38 faster for everyone, which leaves this 0:14 behind the field.
The fieldCompare these two →2:38 faster This athlete2:24 faster -
Osaka30 Jan 2026Individual Pro · Men1:21:22121/340Beat 64%
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Shenzhen20 Dec 2025Relay · Mixed1:16:5842/212Beat 80%
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Shanghai22 Nov 2025Individual Pro · Men1:23:4078/227Beat 66%
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Perth5 Sep 2025Individual Pro · Men1:27:5692/137Beat 33%
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Beijing23 Aug 2025Individual Open · Men1:21:13122/609Beat 80%
↑ 28 days after Hong Kong 2025 9:22 better than the field Why ↓Close ↑
12:53 faster on the clock, and the race was 3:31 faster for everyone, so 9:22 of it was this athlete.
The fieldCompare these two →3:31 faster This athlete12:53 faster -
Hong Kong26 Jul 2025Individual Open · Men1:34:06500/1186Beat 58%