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Marathons in Japan in December 2026

14 marathons in Japan in December 2026.

10 cities
Busiest: December
From €1
See all 14 races
Distance
5K races10K racesHalf marathonsMarathonsUltramarathons
Terrain
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Upcoming races
Shonan International Marathon
Marathon

Shonan International Marathon

Oiso, Japan
Dec 6·From €1
The 21st Shonan International Marathon [Training Frame (Full Marathon)] - 42.195 km

The 21st Shonan International Marathon [Training Frame (Full Marathon)]

Oiso, Naka District, Japan
Dec 6·Closed·From €5
57th Hofu Yomiuri Marathon (General) - 42.195km (General, Shiawase-masu Hofu)
Marathon

57th Hofu Yomiuri Marathon (General)

Hofu, Japan
Dec 6·Closed·From €71
Aotai Pacific International Marathon - 26.2M

Aotai Pacific International Marathon

Miyazaki, Japan
Dec 6·Closed·From €16
The 57th Hofu Yomiuri Marathon (Shiawase-masu Hofu Quota) - 42.195km Elite Women
Marathon

The 57th Hofu Yomiuri Marathon (Shiawase-masu Hofu Quota)

Hofu, Japan
Dec 6·Closed·From €71
National Treasure Matsue Castle Marathon 2026

National Treasure Matsue Castle Marathon 2026

Matsue, Japan
Dec 6·Closed·From €22
15th Mt. Fuji Marathon - 42.195 km

15th Mt. Fuji Marathon

Fujikawaguchiko, Japan
Dec 12·Closed·From €18
Mt. Fuji International Marathon - 26.1 mi

Mt. Fuji International Marathon

Fujikawaguchiko, Japan
Dec 12·From €5
4th Biwako Global Citizens' Forest Relay Marathon - 3-hour relay marathon

4th Biwako Global Citizens' Forest Relay Marathon

Moriyama, Japan
Dec 13·Closes Oct 31·From €3
Kawasaki International EKIDEN 2026 - 42.195km relay, 7 stages

Kawasaki International EKIDEN 2026

Kawasaki, Japan
Dec 13·Closes Nov 15·From €54
Kakogawa Relay Marathon (Substitute Event for the 37th Kakogawa Marathon, Reiwa 8) - 42.195km / 29 laps

Kakogawa Relay Marathon (Substitute Event for the 37th Kakogawa Marathon, Reiwa 8)

Kakogawa, Japan
Dec 13·Closed·From €3
Mie Matsusaka Marathon 2026 (Mie Prefecture Residents Priority Entry) - Full Marathon

Mie Matsusaka Marathon 2026 (Mie Prefecture Residents Priority Entry)

Matsusaka, Japan
Dec 20·Closed·From €5
Year-End Kakogawa Running High 2026 - Full Marathon

Year-End Kakogawa Running High 2026

Kakogawa, Japan
Dec 20·From €5
Mie Matsusaka Marathon 2026 - 42.195 km (Full Marathon)

Mie Matsusaka Marathon 2026

Matsusaka, Japan
Dec 20·Closed·From €5

Your guide to marathons in Japan in December 2026

There are 14 upcoming marathons in Japan in December 2026, spread across 10 cities. Filter by distance or terrain to narrow things down, and save the races you like the look of.

Most take place in December. Next up is Shonan International Marathon in Oiso on 6 December 2026.

Questions runners ask

How many marathons in Japan in December 2026 are there?

Finndu lists 14 upcoming marathons in Japan in December 2026, across 10 towns and cities. The list is updated twice a day as organisers announce new races.

When is the next one?

Shonan International Marathon in Oiso, on 6 December 2026.

How much does it cost to enter?

Entry starts from JP¥135. Fees vary from race to race, so check each race page for its current price.

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