Hmm. Here's the pic :
http://www.japanwindow.com/images/20...809_fuji10.jpg
Yup. Around 12 hours from base to summit but don't forget to calculate the time required to descend.
BTW, 3000m of elevation gain is pretty taxing if you aren't used to the altitude. I live at 1200m and my friends from sea level notice the lack of oxygen after one flight of stairs.