I am average height, around 5'10"-5'11".  I had to roll the legs up 6" just to keep them from sweeping on the floor.  Unlike other cheap sweats, the waist is not strongly elastic.  This means they have a tendency to slip down.  The draw string is a loop instead so you can't draw it tight and tie it off as easily as you can all other sweats I've owned.

I guess they would be ok if you were 6' or taller.  Or if you wore them just as cheap pajamas.  I wouldn't recommend wearing them at the gym unless you really want to moon everyone.