Tadashi Isshiki

Tadashi Isshiki

JapanJapanActive
Born
Jun 5, 1994 (32 years old)
Events
Marathon · Half Marathon

Tadashi Isshiki is a Japan long-distance runner, born on June 5, 1994. He competes primarily in the 5000m, 10000m and Semi.

His personal bests include 13:39.65 in the 5000m, 28:22.10 in the 10000m, 1:01:50 in the Semi and 2:07:39 in the Marathon. He has earned 1 silver medal in major international competitions. He is currently active on the international athletics circuit, representing Japan.

Personal best · Marathon2:07:39
#632 all-time
2026 season best2:17:09Mar 1, 2026 · Tokyo
2026 season best
Personal best · Half Marathon1:01:50
Last competition70th Kansai Inter-Corporate Track & Field ChampionshipsMay 23, 2026 · 14:44.42
70th Kansai Inter-Corporate Track & Field Championships

As of Nov 13, 2026: Marathon 2:07:39 (#632 all-time), Half Marathon 1:01:50, 2026 season best 2:17:09 (Mar 1, 2026, Tokyo (JPN)) · Last competition: 70th Kansai Inter-Corporate Track & Field Championships, May 23, 2026, 14:44.42 · 32 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
5000mNagoya 2016Japan 5000 m all-time list13:39.651,069 pts––
10000mKumagaya 2021Japan 10 000 m all-time list28:22.101,099 pts–#940
SemiMarugame 2020Japan Half Marathon all-time list1:01:501,114 pts––
MarathonTokyo 2020Japan Marathon all-time list2:07:391,173 pts#632–

Progression

SeasonDisciplineResultWindDateCompetitions
20265000m 14:44.42–May 23, 202670th Kansai Inter-Corporate Track & Field Championships
202610000m 29:43.88–Apr 18, 20261st Kansai Distance Challenge Kansai Inter-Corporate Track & Field Championships
2026Semi 1:03:39–Feb 1, 202678th Kagawa Marugame International Half Marathon
2026Marathon 2:17:09–Mar 1, 2026Tokyo Marathon
202510000m 29:23.65–Apr 27, 202569th Kansai Inter-Corporate Track & Field Championships
20245000m 14:00.46–Nov 30, 202413th NITTAIDAI Challenge Games
2024Semi 1:02:25–Feb 4, 202476th Kagawa Marugame International Half Marathon
2024Marathon 2:13:35–Feb 25, 2024Osaka Marathon
FAQ

Frequently asked questions

Tadashi Isshiki's Marathon personal best is 2:07:39, set on Mar 1, 2020 in Tokyo (JPN), #632 on the all-time list.

Tadashi Isshiki competes in the Marathon and Half Marathon.

2026 season best: 2:17:09, set on Mar 1, 2026 in Tokyo (JPN). Last competition: 70th Kansai Inter-Corporate Track & Field Championships on May 23, 2026, 14:44.42.