In which country does an annual ultramarathon sporting event Ultra-Trail Mt. Fuji take place?

I climbed Mt Fuji in 1983.

Having Japan's most famous mount made it too easy. The sister sport around Mont Blanc goes through France, Italy, and Switzerland.

I have a photo taken by my father of two P 51 Mustangs flying in front of Mt Fuji. He was flying another Mustang and was with the Occupying Allied Forces and just about to head off to Korea.

well the clue was in the question, wasn't it??

I took a selfie near mount fuji

hey,stop asking me questions about another country i am in S South Africa do you hear me

Bruh Fuji gave it away