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Natsuko Oki

JPNJPNWomen
Birth dateFeb 18, 2004
Height-
Weight-

Natsuko Oki is a Japan race walker, born on February 18, 2004. She competes primarily in the 20kmW, 5Kilometre and 10Kilometr.

Her personal bests include 1:52:42 in the 20kmW, 26:42 in the 5Kilometre, 49:56 in the 10Kilometr, 48:54.39 in the 10,000Metr and 1:50:55 in the HalfMarath. She is currently active on the international athletics circuit, representing Japan.

Key facts
10 Kilometres Road
49:56
Half Marathon Race Walk
1:50:55
2026 season best
49:54.47
Apr 24, 2026 · Meijijingu Gaien area, Tokyo (JPN)
2026 season best
Last competition
95th Japan Inter-University Athletics Championships
Sep 5, 2026 · 25:28.84
95th Japan Inter-University Athletics Championships
Age
22 years old

As of Sep 29, 2026: 10 Kilometres Road 49:56, Half Marathon Race Walk 1:50:55, 2026 season best 49:54.47 (Apr 24, 2026, Meijijingu Gaien area, Tokyo (JPN)) · Last competition: 95th Japan Inter-University Athletics Championships, Sep 5, 2026, 25:28.84 · 22 years old

PB

Personal bests

20kmW
1:52:42
5Kilometre
26:42
10Kilometr
49:56
10,000Metr
48:54.39
HalfMarath
1:50:55

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
5000Metres
25:28.84-Sep 5, 2026-95th Japan Inter-University Athletics Championships
2026
10,000Metr
48:54.39-May 22, 2026
↑
The 105th Kanto Inter-University Track＆Field Championships
2026
10Kilometr
49:54.47-Apr 24, 2026
↑
All Japan University Track & Field Challenge
2026
HalfMarath
1:50:55-Feb 15, 2026
↑
Japanese Half Marathon Race Walking Championships
2025
10Kilometr
52:57-Jan 1, 2025
↑
New Year Race Walk in Tokyo 2025, Tokyo
2025
10,000Metr
52:57.90-May 9, 2025
↑
The 104th Kanto Inter-University Track＆Field Championships, Gion Stadium, Sagamihara
2025
HalfMarath
1:53:59-Oct 26, 2025
↑
62nd All Japan Race Walking Takahata 2025
2024
10Kilometr
54:00-Jan 1, 2024
↑
72nd New Year Race Walk in Tokyo 2024
2024
10,000Metr
54:33.67-May 10, 2024
↑
The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo
2024
20kmW
1:52:42-Mar 17, 2024-48th All Japan Race Walking, Nomi
2023
10Kilometr
53:31-Feb 19, 2023
↑
34th U20 Invitational Race Walking, Rokko Island Konan Univ. West side, Kobe
2023
10,000Metr
55:01.52-Mar 17, 2023
↑
KGRR Spring Challenge Meet 2023
2022
10,000Metr
58:37.94-Sep 18, 2022
↑
Gion Stadium, Sagamihara (JPN)
2021
5Kilometre
26:42-Jan 1, 2021-Tokyo (JPN)

2026

6 performances

2022

1 performance
DisciplineResultWindDateCompetitions
10,000Metr
58:37.94-Sep 1833rd Kanto University Rookies Athletics Championships, Gion Stadium, Sagamihara

2021

2 performances
DisciplineResultWindDateCompetitions
5Kilometre
27:09-Mar 2145th All-Japan Race Walking Competition, Nomi - U20 Events
5Kilometre
26:42-Jan 169th New Year Race Walk, Tokyo - High School Events

Honours

No medals

FAQ

Frequently asked questions

What is Natsuko Oki's 10 Kilometres Road personal best?

Natsuko Oki's 10 Kilometres Road personal best is 49:56, set on Jan 1, 2026 in Meijijingu Gaien area, Tokyo (JPN).

Which events does Natsuko Oki compete in?

Natsuko Oki competes in the 10 Kilometres Road and Half Marathon Race Walk.

How did Natsuko Oki perform in 2026?

2026 season best: 49:54.47, set on Apr 24, 2026 in Meijijingu Gaien area, Tokyo (JPN). Last competition: 95th Japan Inter-University Athletics Championships on Sep 5, 2026, 25:28.84.