Progress against the field
Jiazhen Zhou has dropped 4:02 behind the field from Yokohama 2025 to Chiba 2026.
The clock says 1:59 faster, but the races themselves got 6:01 quicker for everyone.
188 days between Osaka 2026 and Chiba 2026 is the longest gap compared here, and the second race was 3:06 better than 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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Chiba6 Aug 2026Individual Open · Women1:13:48 PB11/210Beat 95%
↑ 188 days after Osaka 2026 3:06 better than the field Why ↓Close ↑
3:06 better than the field: 5:44 faster on the clock, against 2:38 faster for everyone.
The fieldCompare these two →2:38 faster This athlete5:44 faster -
Osaka30 Jan 2026Individual Open · Women1:19:3245/619Beat 93%
↑ 174 days after Yokohama 2025 7:08 worse than the field Why ↓Close ↑
7:08 behind the field: 3:45 slower on the clock, against 3:23 faster for everyone.
The fieldCompare these two →3:23 faster This athlete3:45 slower -
Yokohama9 Aug 2025Individual Open · Women1:15:4711/304Beat 96%
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Hong Kong26 Jul 2025Individual Open · Women1:18:0313/523Beat 98%
↑ 28 days after Singapore 2025 1:19 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:12 faster on the clock looks better than it was: the race was 1:31 faster for everyone, which leaves this 1:19 behind the field.
The fieldCompare these two →1:31 faster This athlete0:12 faster -
Singapore28 Jun 2025Individual Open · Women1:18:1537/778Beat 95%
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Singapore ExpoDate unknownIndividual Open · Women1:16:3319/596Beat 97%