Mt. Ohira Hiking Course and Mt. Ishiwari Hiking Course have one of the best Mt. Fuji view points. It is located in Lake Yamanaka, Yamanashi Prefecture. Because there is a direct bus from Shinjuku to Lake Yamanaka, it is very convenient one-day hiking spot for people in Tokyo. It takes about 4 to 5 hours and travels 4 peaks of mountains. All of them has a great view of Mt. Fuji.
The route starts either at Hirano bus stop or Mt. Fuji (Lake Yamanakako). They both has the bus stop of Fuji-Q bus.
It is very popular one-day hiking spot near Tokyo because it has direct express bus from Shinjuku.
See Map : http://yamanakako.info/leisure_hiking.php?mode=ohira