Federation · JPN
Japan national best marks
Best mark per athlete by Japan athletes in each event, compiled from the all-time lists we import. Derived national bests — not official national records (see note below).
27
Stored athletes
26
Distinct marks shown
Women's 20 km Walk
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | Nanako Fujii | 1:26:18 | 20 Sep 2025 | — | — |
| 2 | Kumiko Okada | 1:27:41 | 8 Jun 2019 | — | 27 |
| 3 | Masumi Fuchise | 1:28:03 | 25 Jan 2009 | — | — |
| 4 | Mayumi Kawasaki | 1:28:49 | 25 Jan 2009 | — | — |
| 5 | Kumi Otoshi | 1:29:11 | 20 Feb 2011 | — | — |
| 6 | Sachiko Konishi | 1:29:39 | 25 Jan 2009 | — | — |
| 7 | Ayane Yanai | 1:29:44 | 18 May 2024 | — | — |
| 8 | Ryoko Sakakura | 1:30:16 | 28 Jan 2007 | — | — |
| 9 | Yukiko Umeno | 1:31:02 | 16 Feb 2025 | — | — |
| 10 | Kaori Kawazoe | 1:31:10 | 17 Feb 2019 | — | — |
| 11 | Chiaki Asada | 1:31:28 | 15 Mar 2015 | — | — |
| 12 | Rei Inoue | 1:31:48 | 16 Feb 2014 | — | — |
| 13 | Maiko Kawasaki | 1:32:06 | 29 Jan 2006 | — | — |
| 14 | Serena Sonoda | 1:32:11 | 19 Mar 2023 | — | — |
| 15 | Yuki Yoshizumi | 1:32:23 | 19 Mar 2017 | — | — |
| 15= | Asada Chiaki | 1:32:23 | 17 Mar 2019 | — | — |
| 17 | Hiroi Maeda | 1:32:25 | 10 Mar 2013 | — | — |
| 18 | Ai Michiguchi | 1:32:30 | 21 Feb 2016 | — | — |
| 19 | Kaori Nikaido | 1:32:40 | 25 Jan 2004 | — | — |
| 20 | Rena Goto | 1:32:41 | 21 Feb 2016 | — | — |
| 21 | Takako Terui | 1:32:54 | 27 Jan 2002 | — | — |
| 22 | Sumika Tani | 1:33:05 | 16 Mar 2025 | — | — |
| 23 | Yuka Mitsumori | 1:33:08 | 31 Jan 1999 | — | — |
| 24 | Sae Matsumoto | 1:33:16 | 19 Feb 2017 | — | — |
| 25 | Rie Mitsumori | 1:33:35 | 1 Nov 1998 | — | — |
| 26 | Miyu Naitho | 1:33:41 | 23 Oct 2022 | — | — |
| 27 | Hitomi Shimoka | 1:33:53 | 17 Mar 2024 | — | — |
One mark per athlete — the athlete's best while representing Japan. Equal marks share a rank ("1=" style). An athlete with marks for two nations appears under each nation represented at the time (e.g. Obikwelu under Nigeria and Portugal).
About this derivation
These lists are derived from the marks in our database — including the complete legal all-time lists imported from alltime-athletics.com — grouped by the nation the athlete was representing at each mark. They are not official national records: federations ratify national records under their own eligibility rules, and some marks here may not qualify.