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Natsuko Kaku

Natsuko Kaku

JPNJPNMen
Birth dateMay 19, 1984
Height-
Weight-

Natsuko Kaku is a Japan long-distance runner, born on May 19, 1984. He competes primarily in the Marathon and 30Kilometr.

His personal bests include 2:58:20 in the Marathon and 2:06:06 in the 30Kilometr. He is currently active on the international athletics circuit, representing Japan.

Key facts
Marathon
2:58:20
30 Kilometres Road
2:06:06
2026 season best
2:06:44
Feb 15, 2026
2026 season best
Last competition
58th The Ohme 30 & 10 km Road Race, Ohme
Feb 15, 2026 · 2:06:44
58th The Ohme 30 & 10 km Road Race, Ohme
Age
42 years old

As of Sep 23, 2026: Marathon 2:58:20, 30 Kilometres Road 2:06:06, 2026 season best 2:06:44 (Feb 15, 2026) · Last competition: 58th The Ohme 30 & 10 km Road Race, Ohme, Feb 15, 2026, 2:06:44 · 42 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
30Kilometr
2:06:44-Feb 15, 2026
↑
58th The Ohme 30 & 10 km Road Race, Ohme
2025
30Kilometr
2:06:10-Feb 16, 2025
↑
57th The Ohme 30 & 10 km Road Race
2025
Marathon
3:04:07-Jan 26, 2025
↓
Osaka Women's Marathon
2024
30Kilometr
2:06:06-Feb 18, 2024
↑
56th The Ohme 30&10km Road Race
2024
Marathon
2:58:20-Jan 28, 2024
↓
Osaka Women's Marathon
2023
30Kilometr
2:07:28-Feb 19, 2023
↑
55th The Ohme 30&10km Road Race
2023
Marathon
3:02:48-Mar 5, 2023
↓
Tokyo Marathon
2022
Marathon
3:01:00-Jan 30, 2022
↓
Osaka Women's Marathon
2020
Marathon
2:58:30-Jan 26, 2020
↓
Osaka Women's Marathon
2019
Marathon
3:04:31-Jan 27, 2019
↓
Osaka Women's Marathon, Osaka
2011
Marathon
3:03:41-Feb 6, 2011
↓
Oita (JPN)

2026

1 performance
DisciplineResultWindDateCompetitions
30Kilometr
2:06:44-Feb 1558th The Ohme 30 & 10 km Road Race, Ohme

2025

2 performances
DisciplineResultWindDateCompetitions
30Kilometr
2:06:10-Feb 1657th The Ohme 30 & 10 km Road Race
Marathon
3:04:07-Jan 26Osaka Women's Marathon

2024

3 performances
DisciplineResultWindDateCompetitions
Marathon
3:03:07-Mar 3Tokyo Marathon
30Kilometr
2:06:06-Feb 1856th The Ohme 30&10km Road Race
Marathon
2:58:20-Jan 28Osaka Women's Marathon

2023

2 performances
DisciplineResultWindDateCompetitions
Marathon
3:02:48-Mar 5Tokyo Marathon
30Kilometr
2:07:28-Feb 1955th The Ohme 30&10km Road Race

2022

1 performance
DisciplineResultWindDateCompetitions
Marathon
3:01:00-Jan 30Osaka Women's Marathon

2020

1 performance
DisciplineResultWindDateCompetitions
Marathon
2:58:30-Jan 26Osaka Women's Marathon

2019

2 performances
DisciplineResultWindDateCompetitions
Marathon
3:04:39-Mar 3Tokyo Marathon, Tokyo
Marathon
3:04:31-Jan 27Osaka Women's Marathon, Osaka

2011

1 performance
DisciplineResultWindDateCompetitions
Marathon
3:03:41-Feb 6Beppu-Oita Mainichi Marathon, Oita

Honours

No medals

FAQ

Frequently asked questions

What is Natsuko Kaku's Marathon personal best?

Natsuko Kaku's Marathon personal best is 2:58:20, set on Jan 28, 2024 in Osaka (JPN).

Which events does Natsuko Kaku compete in?

Natsuko Kaku competes in the Marathon and 30 Kilometres Road.

How did Natsuko Kaku perform in 2026?

2026 season best: 2:06:44, set on Feb 15, 2026. Last competition: 58th The Ohme 30 & 10 km Road Race, Ohme on Feb 15, 2026, 2:06:44.