Half marathons in Japan in December 2026
20 half marathons in Japan in December 2026.
18 cities
Busiest: December
From €3
Upcoming races
![46th Gunma Safari Tomioka Marathon [3km] - Half Marathon](/_next/image/?url=https%3A%2F%2Fmedia.finndu.app%2Fassets%2Fimg%2F3e28618fb522252bc662a52db33854b1d0433e5e3e9e0306a9b477972a2e23f3.jpg&w=3840&q=70)
![PILLAR Co., Ltd. Presents the 38th Sanda International Masters Marathon [JAAF Certification Applied For] - Half Marathon](/_next/image/?url=https%3A%2F%2Fmedia.finndu.app%2Fassets%2Fimg%2F55069566dc4ff89fdb840341af85b8af2b8a0bebfa4dce84ae4976bb49dead9f.jpg&w=3840&q=70)
Your guide to half marathons in Japan in December 2026
There are 20 upcoming half marathons in Japan in December 2026, spread across 18 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 Nagoya Shachihoko Trial vol.10 - Half Marathon Relay in 名古屋市 on 5 December 2026.
Questions runners ask
How many half marathons in Japan in December 2026 are there?
Finndu lists 20 upcoming half marathons in Japan in December 2026, across 18 towns and cities. The list is updated twice a day as organisers announce new races.
When is the next one?
Nagoya Shachihoko Trial vol.10 in 名古屋市, on 5 December 2026.
How much does it cost to enter?
Entry starts from JP¥500. Fees vary from race to race, so check each race page for its current price.