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The Tamana Idaten Marathon is the full marathon of the day, open to men and women aged 18 and over and run under a 6-hour limit with checkpoints on the course. Entrants receive a T-shirt in a design kept separate from the costume goods, plus a finisher towel at the finish line, and can order a finisher medal for an extra fee on race day.
Aid stations serving local strawberries and tomatoes
A route through countryside associated with marathon pioneer Shizo Kanaguri
Finish at the Yokoshima Ground in Tamana City
Start in front of the Tamana City Hall Yokoshima Branch
A long-running event now in its 47th edition
Hot springs and Tamana ramen nearby for recovery
Qualification
Start / Finish
In front of the Tamana City Hall Yokoshima Branch
Yokoshima Ground, Tamana City
Terrain
Route
Race Day
Recovery
What you get
Finisher certificate
Participation award of nori seaweed for all entrants
T-shirt for full marathon entrants (different design from the costume goods)
Finisher towel for full marathon finishers
Finisher medal for full marathon finishers, for an extra fee on race day and mailed afterwards
One pack of strawberries for primary school entrants in the 3 km races
Race record certificate issued online (not for the 2.5 km)
Participant marathon insurance taken out by the organiser
On the day
Bag drop
Food vendors
Merchandise
Before you enter
Other questions
No, there is no athlete check-in. Your number card, timing chip and participation award are posted to you at least ten days before race day, so you can go straight to the start area.
Entries through RUNNET open on 9 September 2026 at 10:00 and close on 13 November 2026 at 23:59. Entry closes early if the field fills up, so early application is recommended.
Yes. A nickname number card costs 500 yen. Nicknames can be up to seven full-width characters, with five characters recommended.
These are costume items inspired by Shizo Kanaguri: a T-shirt for 2,600 yen, tabi running footwear for 8,000 yen, or both together for 10,000 yen. They are a different design from the participation award T-shirt.
No paper programme is posted out. It is published for download on the official event website in early February, so please check the site before race day.
Tamana, Japan
Sunday, February 28, 2027
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€54
entry fee