I'm up to 8 miles of what they call moderate hikes and it tires me satisfactorily. Between 2008 and 2012 I had gotten extremely lethargic and sedentary. In 201

I'm up to 8 miles of what they call moderate hikes and it tires me satisfactorily. Between 2008 and 2012 I had gotten extremely lethargic and sedentary. In 2012 I started walking - could do 2 miles at best. I gradually got up to doing 5 miles and easy biking over those years. After that I started hiking in the mountains - long easy ones first and now I'm up to easily doing 8 miles moderate ones. (Heat makes it more miserable for me than anything else so I go early in the mornings.) I am 50 and don't look at it as a competitive thing - just something to stay active and feel good. Also 100% agree with the comment below on getting good shoes that fit you well. You do not want to get foot or back pain. Also avoid walking on concrete pathways.