The altitude: 1296m
The trekking route of this mountain is about 7km long and takes 3.5 hours for round trip.
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