9 upcoming races across Nagano. Every date checked against the organiser. Your next race, seen from above.
Loop course circling Nagano's Lake Suwa
Runs part of the 1998 Winter Olympics marathon course
Japan's classic highland 100K, cool air and open views
Rolling loop through Karuizawa's forests and resort town
Circles Mount Ontake, one of Japan's sacred peaks
Golden Trail World Series racing in the Japanese Alps
100 miles over five peaks along the Shin-etsu ridge
Through the forest trails of Mt. Madarao





Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.