Haruki Mashiko

JapanJapanActive
Born
Nov 20, 2004 (21 years old)
Events
10 000 m · Half Marathon

Haruki Mashiko is a Japan long-distance runner, born on November 20, 2004. He competes primarily in the 3000m, 5000m and 10000m.

His personal bests include 8:48.65 in the 3000m, 14:55.27 in the 5000m, 29:36.19 in the 10000m, 1:06:45 in the Semi and 14:24 in the 5Kilometre. He is currently active on the international athletics circuit, representing Japan.

Personal best · 10 000 m29:36.19
2026 season best29:36.19Feb 14, 2026 · Mikio Oda Memorial Athletic Field, Tokorozawa
2026 season best
Personal best · Half Marathon1:06:45
Last competitionThe Road of WASEDA/4th Waseda University track and field meetSep 27, 2026 · 14:14
The Road of WASEDA/4th Waseda University track and field meet

As of Nov 13, 2026: 10 000 m 29:36.19, Half Marathon 1:06:45, 2026 season best 29:36.19 (Feb 14, 2026, Mikio Oda Memorial Athletic Field, Tokorozawa (JPN)) · Last competition: The Road of WASEDA/4th Waseda University track and field meet, Sep 27, 2026, 14:14 · 21 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
3000mTokorozawa 2026Japan 3000 m all-time list8:48.65790 pts––
5000mKawasaki 2021Japan 5000 m all-time list14:55.27824 pts––
10000mTokorozawa 2026Japan 10 000 m all-time list29:36.19989 pts–#847
SemiAgeo 2025Japan Half Marathon all-time list1:06:45930 pts––
5KilometreTokorozawa 202414:24–#384

Progression

SeasonDisciplineResultWindDateCompetitions
20263000m 8:48.65–Jul 5, 20263rd Waseda University track and field meet
20265Kilometre 14:14–Sep 27, 2026The Road of WASEDA/4th Waseda University track and field meet
202610000m 29:36.19–Feb 14, 20269th Waseda University track and field meet
2025Semi 1:06:45–Nov 16, 2025Ageo City Half Marathon
20245Kilometre 14:24–Sep 29, 2024The 5th Waseda University track and field meet
202410000m 29:58.54–Oct 19, 20246th Waseda University track and field meet Mikio Oda Memorial Athletic Field, Tokorozawa(JPN)
20215000m 14:55.27–Jun 19, 2021Todoroki Stadium, Kawasaki (JPN)
FAQ

Frequently asked questions

Haruki Mashiko's 10 000 m personal best is 29:36.19, set on Feb 14, 2026 in Mikio Oda Memorial Athletic Field, Tokorozawa (JPN).

Haruki Mashiko competes in the 10 000 m and Half Marathon.

2026 season best: 29:36.19, set on Feb 14, 2026 in Mikio Oda Memorial Athletic Field, Tokorozawa (JPN). Last competition: The Road of WASEDA/4th Waseda University track and field meet on Sep 27, 2026, 14:14.