6 races in date order
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Kanazawa Marathon
Full marathon through the historic streets and culture of Kanazawa
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Yokohama Marathon
A waterfront marathon through Japan's second city
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Shimada Oigawa Marathon
Japan's first riverbed marathon course, along the Oigawa
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Suwako Marathon
Loop course circling Nagano's Lake Suwa
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Mito Komon Manyu Marathon
Named for wandering lord Mito Komon's journeys
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Lake Biwa 100
100-mile ultra crossing Suzuka and Hira ridgelines above Lake Biwa
Your next race, seen from above.
Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
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Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
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.