KM

Kokoro Mase

JPNJPNWomen
Birth dateJun 21, 2007
Height-
Weight-

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.

Key facts
5 Kilometres Road
23:48
2026 season best
24:11.38
Sep 5, 2026
2026 season best
Last competition
95th Japan Inter-University Athletics Championships
Sep 5, 2026 · 24:11.38
95th Japan Inter-University Athletics Championships
Age
19 years old

As of Sep 29, 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

PB

Personal bests

5Kilometre
23:48
3000m-short-track
15:33.94
10Kilometr
50:34
5000m-short-track
24:15.31
10,000Metr
50:57.97

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
5000Metres
24:11.38-Sep 5, 2026-95th Japan Inter-University Athletics Championships
2026
10Kilometr
50:34-Feb 15, 2026
↑
Japanese Half Marathon Race Walking Championships
2026
10,000Metr
50:57.97-May 16, 2026-The 103rd Kansai Inter University Track&Field Championships
2025
5Kilometre
23:48-Mar 16, 2025
↑
Asian Race Walking Championships
2025
20kmW
24:15.31-Jul 26, 2025-2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
2025
5000m-short-track
24:15.31-Jul 25, 2025
↑
2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
2025
10Kilometr
53:20-Feb 16, 2025
↑
Japenese U20 Race Walking Championships
2024
3000m-short-track
15:33.94-Oct 18, 2024-18th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
2024
3Kilometre
15:33.94-Oct 19, 2024-18th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
2024
5000m-short-track
25:33.34-Jun 15, 2024
↑
77th Kinki High School Championship, Yanmar Stadium Nagai, Osaka
2024
5Kilometre
27:05-Nov 10, 2024
↑
Race Walking in Osaka Nakanoshima 24

2024

3 performances
DisciplineResultWindDateCompetitions
5Kilometre
27:05-Nov 10Race Walking in Osaka Nakanoshima 24
3000m-short-track
15:33.94-Oct 1818th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
5000m-short-track
25:33.34-Jun 1577th Kinki High School Championship, Yanmar Stadium Nagai, Osaka

Honours

No medals

FAQ

Frequently asked questions

What is Kokoro Mase's 5 Kilometres Road personal best?

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

Which events does Kokoro Mase compete in?

Kokoro Mase competes in the 5 Kilometres Road.

How did Kokoro Mase perform in 2026?

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.