Gaku Masuko

JapanJapanActive
Born
Aug 3, 2006 (20 years old)
Events
5000 m

Gaku Masuko is a Japan long-distance runner, born on August 3, 2006. He competes primarily in the 5000m and Semi.

His personal bests include 14:47.93 in the 5000m and 1:03:20 in the Semi. He is currently active on the international athletics circuit, representing Japan.

Personal best · 5000 m14:47.93
2026 season best14:19Sep 27, 2026
2026 season best
Last competitionADIZERO 5K Tokyo ChallengeSep 27, 2026 · 14:19
ADIZERO 5K Tokyo Challenge

As of Nov 14, 2026: 5000 m 14:47.93, 2026 season best 14:19 (Sep 27, 2026) · Last competition: ADIZERO 5K Tokyo Challenge, Sep 27, 2026, 14:19 · 20 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
5000mKagoshima 2023Japan 5000 m all-time list14:47.93847 pts–
SemiMarugame 2026Japan Half Marathon all-time list1:03:201,056 pts–

Progression

SeasonDisciplineResultWindDateCompetitions
20265Kilometre 14:19–Sep 27, 2026ADIZERO 5K Tokyo Challenge
2026Semi 1:03:20–Feb 1, 202678th Kagawa Marugame International Half Marathon
2025Semi 1:04:26–Oct 18, 2025The 102nd Hakone Ekiden Qualifying Meet, Showa Kinen Park, Tachikawa
20235000m 14:47.93–Oct 13, 2023National Sports Festival
FAQ

Frequently asked questions

Gaku Masuko's 5000 m personal best is 14:47.93, set on Oct 13, 2023 in Prefectural Stadium, Kagoshima (JPN).

Gaku Masuko competes in the 5000 m.

2026 season best: 14:19, set on Sep 27, 2026. Last competition: ADIZERO 5K Tokyo Challenge on Sep 27, 2026, 14:19.