Course
Half Marathon21.1 km
Key dates
- ★Race daySun 25 Oct 2026
Date confirmed with the organiser · entry window checked by RunCalendar
About
The Suwako Marathon is a half marathon that loops around Lake Suwa in Nagano Prefecture, starting from the Suwa Lake Event Plaza. Now in its 38th year, the race caps entries at 7,000 runners with a reserved bracket for Nagano residents, though it is not a JAAF-certified event.
Your next race, seen from above.
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Save Suwako Marathon to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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