Nanako Sako

Nanako Sako

JapanJapanActive
Born
May 11, 1997 (29 years old)
Events
5000 m · 10 000 m

Nanako Sako is a Japan long-distance runner, born on May 11, 1997. She competes primarily in the 3000m, 5000m and 10000m.

Her personal bests include 9:39.76 in the 3000m, 16:26.63 in the 5000m, 34:49.95 in the 10000m, 2:48:05 in the Marathon and 2:00:26 in the 30Kilometr. She is currently active on the international athletics circuit, representing Japan.

Personal best · 5000 m16:26.63
2026 season best2:48:05Jan 25, 2026 · Osaka
2026 season best
Personal best · 10 000 m34:49.95
Last competitionTokyo MarathonMar 1, 2026 · 2:49:25
Tokyo Marathon

As of Nov 13, 2026: 5000 m 16:26.63, 10 000 m 34:49.95, 2026 season best 2:48:05 (Jan 25, 2026, Osaka (JPN)) · Last competition: Tokyo Marathon, Mar 1, 2026, 2:49:25 · 29 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
3000mYokohama 2019Japan 3000 m all-time list9:39.76977 pts–
5000mYokohama 2017Japan 5000 m all-time list16:26.631,002 pts–
10000mSagamihara 2019Japan 10 000 m all-time list34:49.95994 pts–
MarathonOsaka 2026Japan Marathon all-time list2:48:05956 pts–
30KilometrTokyo 20252:00:26–

Progression

SeasonDisciplineResultWindDateCompetitions
2026Marathon 2:48:05–Jan 25, 2026Osaka Women's Marathon
202530Kilometr 2:00:26–Feb 16, 202557th The Ohme 30 & 10 km Road Race
2025Marathon 2:52:22–Jan 26, 2025Osaka Women's Marathon
2024Marathon 3:04:17–Mar 10, 2024Nagoya Women's Marathon
20193000m 9:39.76–Nov 16, 2019NITTAIDAI Athletic Stadium, Yokohama (JPN)
201910000m 34:49.95–May 23, 2019Sagamihara (JPN)
20185000m 16:47.86–Nov 10, 2018Yokohama (JPN)
201810000m 36:01.13–May 24, 2018Sagamihara (JPN)
FAQ

Frequently asked questions

Nanako Sako's 5000 m personal best is 16:26.63, set on Dec 2, 2017 in Yokohama (JPN).

Nanako Sako competes in the 5000 m and 10 000 m.

2026 season best: 2:48:05, set on Jan 25, 2026 in Osaka (JPN). Last competition: Tokyo Marathon on Mar 1, 2026, 2:49:25.