118 upcoming races, from the big city starts to your own town's. Every date checked against the organiser. Your next race, seen from above.
Full marathon through the historic streets and culture of Kanazawa
A waterfront marathon through Japan's second city
Japan's first riverbed marathon course, along the Oigawa
Loop course circling Nagano's Lake Suwa
Named for wandering lord Mito Komon's journeys
100-mile ultra crossing Suzuka and Hira ridgelines above Lake Biwa
Crosses the Kanmon Strait between Honshu and Kyushu
Trail through Noto Peninsula's Satoyama heritage terrain
Views of the Tateyama mountain range
Flat cycling-path course beside Kyushu's largest river
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.