Mariko Asato

Mariko Asato

JapanJapanActive
Born
Aug 11, 1987 (39 years old)
Events
Marathon · Half Marathon

Mariko Asato is a Japan long-distance runner, born on August 11, 1987. She competes primarily in the 3000m, Semi and Marathon.

Her personal bests include 10:20.60 in the 3000m, 1:19:36 in the Semi, 2:43:01 in the Marathon and 36:18 in the 10Kilometr. She is currently active on the international athletics circuit, representing Japan.

Personal best · Marathon2:43:01
2026 season best2:59:09Mar 1, 2026 · Tokyo
2026 season best
Personal best · Half Marathon1:19:36
Last competitionTokyo MarathonMar 1, 2026 · 2:59:09
Tokyo Marathon

As of Nov 13, 2026: Marathon 2:43:01, Half Marathon 1:19:36, 2026 season best 2:59:09 (Mar 1, 2026, Tokyo (JPN)) · Last competition: Tokyo Marathon, Mar 1, 2026, 2:59:09 · 39 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
3000mOkinawa 2020Japan 3000 m all-time list10:20.60852 pts–
SemiOkayama 2021Japan Half Marathon all-time list1:19:36941 pts–
MarathonOsaka 2010Japan Marathon all-time list2:43:011,000 pts–
10KilometrOkayama 201736:18–

Progression

SeasonDisciplineResultWindDateCompetitions
2026Marathon 2:59:09–Mar 1, 2026Tokyo Marathon
2025Marathon 2:45:11–Mar 2, 2025Tokyo Marathon
202410Kilometr 37:12–Dec 15, 2024The 43rd SANYO Ladies Road Race
2024Semi 1:20:23–Oct 20, 2024Tokyo Legacy Half Marathon
2024Marathon 2:45:18–Mar 3, 2024Tokyo Marathon
202310Kilometr 37:06–Dec 17, 2023The 42nd SANYO Ladies Road Race
2023Marathon 2:45:57–Mar 5, 2023Tokyo Marathon
20223000m 10:29.17–Apr 30, 2022Prefectural Stadium, Okinawa (JPN)
FAQ

Frequently asked questions

Mariko Asato's Marathon personal best is 2:43:01, set on Jan 31, 2010 in Osaka (JPN).

Mariko Asato competes in the Marathon and Half Marathon.

2026 season best: 2:59:09, set on Mar 1, 2026 in Tokyo (JPN). Last competition: Tokyo Marathon on Mar 1, 2026, 2:59:09.