Mt. Fuji 100

The Mt. Fuji 100, formerly Ultra-Trail Mt. Fuji, is an annual ultramarathon sporting event in Yamanashi Prefecture and Shizuoka Prefecture, Japan. The race started in 2012, and changed its name for the 10th edition in 2024.
The total distance is 166.6 km with 7,038 m of cumulative altitude gain, and the time limit is 44.5 hours. The race gained recognition as a sister sport event of the Ultra-Trail du Mont-Blanc, and was affiliated with the now-defunct Ultra-Trail World Tour. Beginning with the 2024 edition, it became part of the Gran Canaria World Trail Majors race series.
As of the season, the event includes three distances of races:

FUJI 100 mi
KAI 70k
ASUMI 40k

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FUJI 100mi course

The 166 km course circulates around Mount Fuji, cumulatively gaining 7,038 m of altitude. Runners must complete the course in under 44.5 hours. The finish venue is Fuji Hokuroku Park. The participants are limited to those over 18 years old, and need to submit a proof of earning sufficient points by finishing other trail races.