Mt. Fuji International Marathon
Race Day Weather
Cool start, gradual warming
Runners will face a temperature rise from 47°F at the start to 53°F by finish, with humidity at 67% providing a cool, comfortable environment. Light winds will be a non-factor, though runners should prepare for a potential light rain early on. Given the hilly nature of the course, pacing adjustments may be necessary, especially during the climbs at miles 10 and 14-15 where conditions could feel more strenuous.
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Race Info
The Mt. Fuji International Marathon runs a single lap around Lake Kawaguchi and Lake Saiko in Fujikawaguchiko, Yamanashi Prefecture, with Mount Fuji visible for more than half the course. The full marathon starts and finishes at the Funatsuhama lakeside parking area on Lake Kawaguchi's shore. Starting with the 2026 edition the race weekend expanded to two days, adding a Fuji View Run and Fuji View Walk alongside the full marathon, a roughly 17km lap of Lake Kawaguchi, and a charity fun run. The course is JAAF-certified and the race is a Boston Marathon qualifier.
