I am 19 yrs old,5feet 8inches tall and 80 kgs weight.how much distance can i run everyday,to be fit?

I'm 25 and I can run 2,5 miles a day. I'm not physically fit. I just had 2 children back-to-back. Ages 1, & 2. And I've lost 13lbs already in 5 months. If you are just wanting to keep healthy. Try jogging with 2lb weights on your ankles and arms. And do a couple miles a day. You will definitely see a difference in your muscle tone and you'll look and feel good about yourself.