Kokoro Mase

JapanJapanActive
Born
Jun 21, 2007 (19 years old)
Events
5 Kilometres Road

Kokoro Mase is a Japan sprinter, born on June 21, 2007. She competes primarily in the 5Kilometre, 3000m-short-track and 10Kilometr.

Her personal bests include 23:48 in the 5Kilometre, 15:33.94 in the 3000m-short-track, 50:34 in the 10Kilometr, 24:15.31 in the 5000m-short-track and 50:57.97 in the 10,000Metr. She is currently active on the international athletics circuit, representing Japan.

Personal best · 5 Kilometres Road23:48
2026 season best24:11.38Sep 5, 2026
2026 season best
Last competition95th Japan Inter-University Athletics ChampionshipsSep 5, 2026 · 24:11.38
95th Japan Inter-University Athletics Championships

As of Nov 13, 2026: 5 Kilometres Road 23:48, 2026 season best 24:11.38 (Sep 5, 2026) · Last competition: 95th Japan Inter-University Athletics Championships, Sep 5, 2026, 24:11.38 · 19 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
5KilometreNomi 202523:48––
3000m-short-trackIse 202415:33.94183 pts––
10KilometrKobe 202650:34––
5000m-short-trackHiroshima 202524:15.31343 pts––
10,000MetrOsaka 202650:57.97–#118

Progression

SeasonDisciplineResultWindDateCompetitions
20265000Metres 24:11.38–Sep 5, 202695th Japan Inter-University Athletics Championships
202610Kilometr 50:34–Feb 15, 2026Japanese Half Marathon Race Walking Championships
202610,000Metr 50:57.97–May 16, 2026The 103rd Kansai Inter University Track&Field Championships
20255Kilometre 23:48–Mar 16, 2025Asian Race Walking Championships
202520kmW 24:15.31–Jul 26, 20252025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
20255000m-short-track 24:15.31–Jul 25, 20252025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
202510Kilometr 53:20–Feb 16, 2025Japenese U20 Race Walking Championships
20243000m-short-track 15:33.94–Oct 18, 202418th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
FAQ

Frequently asked questions

Kokoro Mase's 5 Kilometres Road personal best is 23:48, set on Mar 16, 2025 in Nomi (JPN).

Kokoro Mase competes in the 5 Kilometres Road.

2026 season best: 24:11.38, set on Sep 5, 2026. Last competition: 95th Japan Inter-University Athletics Championships on Sep 5, 2026, 24:11.38.