Natsuko Oki

JapanJapanActive
Born
Feb 18, 2004 (22 years old)
Events
10 Kilometres Road · Half Marathon Race Walk

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.

Personal best · 10 Kilometres Road49:56
2026 season best49:54.47Apr 24, 2026 · Meijijingu Gaien area, Tokyo
2026 season best
Personal best · Half Marathon Race Walk1:50:55
Last competition63rd All Japan Race Walking TakahataOct 25, 2026 · 1:49:49
63rd All Japan Race Walking Takahata

As of Nov 13, 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: 63rd All Japan Race Walking Takahata, Oct 25, 2026, 1:49:49 · 22 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
20kmWNomi 2024Japan 20 km race walk all-time list1:52:42775 pts––
5KilometreTokyo 202126:42––
10KilometrTokyo 202649:56––
10,000MetrUtsunomiya 202648:54.39–#75
HalfMarathKobe 20261:50:55–#251

Progression

SeasonDisciplineResultWindDateCompetitions
20265000Metres 25:28.84–Sep 5, 202695th Japan Inter-University Athletics Championships
202610,000Metr 48:54.39–May 22, 2026The 105th Kanto Inter-University Track＆Field Championships
202610Kilometr 49:54.47–Apr 24, 2026All Japan University Track & Field Challenge
2026HalfMarath 1:49:49–Oct 25, 202663rd All Japan Race Walking Takahata
202510Kilometr 52:57–Jan 1, 2025New Year Race Walk in Tokyo 2025, Tokyo
202510,000Metr 52:57.90–May 9, 2025The 104th Kanto Inter-University Track＆Field Championships, Gion Stadium, Sagamihara
2025HalfMarath 1:53:59–Oct 26, 202562nd All Japan Race Walking Takahata 2025
202410Kilometr 54:00–Jan 1, 202472nd New Year Race Walk in Tokyo 2024
FAQ

Frequently asked questions

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

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

2026 season best: 49:54.47, set on Apr 24, 2026 in Meijijingu Gaien area, Tokyo (JPN). Last competition: 63rd All Japan Race Walking Takahata on Oct 25, 2026, 1:49:49.