Ultra-Trail Mt. Fuji

The Mt. Fuji 100, formerly Ultra-Trail Mt. Fuji (ウルトラトレイル・マウントフジ), is an annual ultramarathon sporting event in Yamanashi Prefecture and Shizuoka Prefecture, Japan, started in 2012. The name was changed 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. It is a sister sport event of Ultra-Trail du Mont-Blanc and part of the World Trail Majors Race Series.

There are two categories of race under the banner of Mt. Fuji 100: "FUJI 100mi" (formerly Ultra-Trail Mt. Fuji), is the full course around Mount Fuji, and the "KAI 70k", a 69.4 km race with 3,493 m of altitude gain.

Course
The 166 km course circulates around Mount Fuji, cumulatively gaining 7,038 m of altitude. Time limit is 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.