HALF MARATHONS — JAPAN

Half Marathons in Japan

We list 232 half marathons across 38 prefectures of Japan, 65 of them upcoming. The next one is The 10th Miyagi-Natori Seaside Marathon with Cool Knot—Earthquake Recovery Charity— on Nov 14, 2026. Compare dates, entry fees and deadlines to pick your next race.

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UPCOMING

Upcoming races (65)

November 202626

11.14SAT 2026
RACE IN 3D
Full +1

The 10th Miyagi-Natori Seaside Marathon with Cool Knot—Earthquake Recovery Charity—

Miyagi · Full Marathon

42.195 KM
2.7/ 5.0
11.15SUN 2026
RACE IN 4D
Full +6

The 3rd Saeki Full Marathon

Oita · Full Marathon

42.195 KM
3.1/ 5.0
11.15SUN 2026
RACE IN 4D
Full +1

Hitachi Seaside Marathon

Ibaraki · To be determined

42.195 KM
3.6/ 5.0
11.15SUN 2026
RACE IN 4D
Half +1EN

MINATO City Half Marathon

Tokyo · To be determined

21.098 KM
1.6/ 5.0
11.21SAT 2026
RACE IN 10D
Full +4

THE CHALLENGE RACE YOKOHAMA 12 in 2026

Kanagawa · Full Marathon

42.195 KM
2.3/ 5.0
11.21SAT 2026
RACE IN 10D
Full +4EN

THE CHALLENGE RACE YOKOHAMA 11 in 2026

Kanagawa · Full Marathon

42.195 KM
2.3/ 5.0
11.21SAT 2026
RACE IN 10D
Full +4EN

THE CHALLENGE RACE YOKOHAMA 10 in 2026

Kanagawa · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 4 in 2026

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 5 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 4 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
ENTRY: 9D LEFT
Full +5

3rd Sports Mate Run Musashi-Kosugi Tamagawa Marathon

Kanagawa · Full Marathon

42.195 KM
3.6/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 8 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Half +2

Jubilo Iwata Memorial Marathon

Shizuoka · To be determined

21.098 KM
3.5/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 3 in 2026

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 1 in 2026

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 2 in 2026

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 2 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 5 in 2026

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Half

Yokosuka Seaside Marathon

Kanagawa · Half Marathon

21.098 KM
3.0/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4

THE CHALLENGE RACE TOYOSU 7 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.22SUN 2026
RACE IN 11D
Full +4EN

THE CHALLENGE RACE TOYOSU 3 in 2025

Tokyo · Full Marathon

42.195 KM
2.3/ 5.0
11.23MON 2026
ENTRY: 10D LEFT
Full +3

The 34th UP RUN Higashi-Ojima Komatsugawa Park Marathon ~Long-Distance Special Edition~

Tokyo · Full Marathon

42.195 KM
3.1/ 5.0
11.23MON 2026
RACE IN 12D
Full +5

2025 Watarase Flood Control Reservoir Autumn Marathon

Tochigi · Full Marathon

42.195 KM
3.1/ 5.0
11.29SUN 2026
RACE IN 18D
Full +3

The 18th Nagoya Adventure Marathon

Aichi · Full Marathon

42.195 KM
3.4/ 5.0
11.29SUN 2026
RACE IN 18D
Half +1

Koto Seaside Marathon

Tokyo · Half Marathon

21.098 KM
2.8/ 5.0
11.29SUN 2026
ENTRY: 17D LEFT
Full +2

Yolon Marathon

Kagoshima · Full Marathon

42.195 KM
3.5/ 5.0

December 202611

12.05SAT 2026
ENTRY: 4D LEFT
Full +2EN

The 16th Izu-Oshima Marathon

Tokyo · Full Marathon

42.195 KM
4.1/ 5.0
12.06SUN 2026
RACE IN 25D
Half +1

Running on Sakurajima

Kagoshima · To be determined

21.098 KM
3.8/ 5.0
12.06SUN 2026
RACE IN 25D
Half +2

Ihatov Hanamaki Half Marathon

Iwate · To be determined

21.098 KM
3.2/ 5.0
12.13SUN 2026
Half +2

Ishin no Sato Hagi Castle Town Marathon

Yamaguchi · Half Marathon

21.098 KM
3.0/ 5.0
12.13SUN 2026
Half +2

Sano Marathon

Tochigi · Undetermined

21.098 KM
3.9/ 5.0
12.13SUN 2026
Half

Tokai Half Marathon

Aichi · To be determined

21.098 KM
3.6/ 5.0
12.13SUN 2026
Half

Kyoto Kameoka Half Marathon

Kyoto · To be determined

21.098 KM
3.5/ 5.0
12.13SUN 2026
Full +4

THE CHALLENGE RACE OSAKA 6

Osaka · Full Marathon

42.195 KM
2.3/ 5.0
12.20SUN 2026
HalfEN

Wakayama Jazz Marathon

Wakayama · Half Marathon

21.098 KM
4.0/ 5.0
12.20SUN 2026
Half

Kasama Pottery Village Half Marathon

Ibaraki · To be determined

21.098 KM
2.0/ 5.0
12.26SAT 2026
Full +4

THE CHALLENGE RACE YOKOHAMA 13 in 2026

Kanagawa · Full Marathon

42.195 KM
2.3/ 5.0

January 20275

1.24SUN 2027
Half +4

Takatsuki City Half Marathon

Osaka · Full Marathon

21.098 KM
3.2/ 5.0
1.24SUN 2027
ENTRY: 19D LEFT
Full +1

Tokyo Challenge Marathon 2026

Tokyo · Full Marathon

42.195 KM
2.4/ 5.0
1.31SUN 2027
Half

Fuji Marathon Festival

Shizuoka · To be determined

21.098 KM
2.4/ 5.0
1.31SUN 2027
Half

Osaka International Women's Marathon

Osaka · half-marathon

21.098 KM
1.8/ 5.0
1.31SUN 2027
Half +1

Shinjuku City Half Marathon

Tokyo · Half Marathon

21.098 KM
3.0/ 5.0

February 202711

2.07SUN 2027
ENTRY: 19D LEFT
Half +1

Kanagawa Marathon

Kanagawa · To be determined

21.098 KM
2.1/ 5.0
2.07SUN 2027
Half

Moriya Half Marathon

Ibaraki · To be determined

21.098 KM
3.5/ 5.0
2.07SUN 2027
Half +2EN

Kagawa Marugame International Half Marathon

Kagawa · Half Marathon

21.098 KM
2.3/ 5.0
2.13SAT 2027
Full +4

THE CHALLENGE RACE OSAKA 7

Osaka · Full Marathon

42.195 KM
2.3/ 5.0
2.14SUN 2027
Half +2

Hamamatsu City Marathon

Shizuoka · Half Marathon

21.098 KM
2.6/ 5.0
2.21SUN 2027
Full +2EN

Kitakyushu Marathon

Fukuoka · Full Marathon

42.195 KM
3.1/ 5.0
2.21SUN 2027
Full +3EN

Kochi Ryoma Marathon

Kochi · Full Marathon

42.195 KM
3.4/ 5.0
2.28SUN 2027
Full +2

Goto Tsubaki Marathon

Nagasaki · Full Marathon / Half Marathon / Relay Marathon

42.195 KM
3.8/ 5.0
2.28SUN 2027
ENTRY: 5D LEFT
Full +4

Yokoshima Strawberry Marathon / Tamana Idaten Marathon

Kumamoto · To be determined

42.195 KM
3.8/ 5.0
2.28SUN 2027
ENTRY: 30D LEFT
Half

Inuyama Half Marathon

Aichi · To be determined

21.098 KM
1.6/ 5.0
2.28SUN 2027
Full +5

That's Right, Kibi Road Marathon

Okayama · Full Marathon / Half Marathon / 10K / 5K / 3K

42.195 KM
3.7/ 5.0

March 20279

3.06SAT 2027
Full +3

THE CHALLENGE RACE SENDAI 1

Miyagi · Full Marathon

42.195 KM
2.3/ 5.0
3.06SAT 2027
Full +3

THE CHALLENGE RACE SENDAI 2

Miyagi · Full Marathon

42.195 KM
2.3/ 5.0
3.07SUN 2027
ENTRY: 14D LEFT
Half +2EN

Miura International Citizens' Marathon

Kanagawa · Half Marathon / 10K / 5K

21.098 KM
4.0/ 5.0
3.14SUN 2027
Half +3

Tachikawa City Half Marathon

Tokyo · Half Marathon

21.098 KM
3.5/ 5.0
3.14SUN 2027
Half +4

Katsushika Fureai Run Festival

Tokyo · To be determined

21.098 KM
2.7/ 5.0
3.14SUN 2027
Full +2

Marathon Festival Nagoya, Aichi, Japan

Aichi · Half Marathon

42.195 KM
4.5/ 5.0
3.15MON 2027
Half

Seki City Marathon, City of Cutlery

Gifu · Half Marathon

21.098 KM
3.0/ 5.0
3.21SUN 2027
Full +4EN

THE CHALLENGE RACE KOBE 1 in 2026

Hyogo · Full Marathon

42.195 KM
2.3/ 5.0
3.21SUN 2027
Half

Matsue Women's Half Marathon

Shimane · Half Marathon

21.098 KM
3.0/ 5.0

April 20271

4.25SUN 2027
HalfEN

Naoko Takahashi Cup Gifu Seiryu Half Marathon

Gifu · Half Marathon

21.098 KM
3.5/ 5.0

May 20271

5.09SUN 2027
HalfEN

Sendai International Half Marathon

Miyagi · Half Marathon

21.098 KM
2.5/ 5.0

October 20271

10.31SUN 2027
Full +4EN

Yokohama Marathon

Kanagawa · Full Marathon

42.195 KM
4.5/ 5.0

DATE TBA

Date to be announced (22)

HELD RECENTLY

Held recently — next date pending (145)

Sorted by when they're usually held, soonest first. We update the next date once the organizer announces it.

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