I rode a bicycle from SF to NYC (about 2500 miles, ~150 miles per day), and that was "free" in the sense that I didn't have to pay anyone to do it. I'm also ass

I rode a bicycle from SF to NYC (about 2500 miles, ~150 miles per day), and that was "free" in the sense that I didn't have to pay anyone to do it. I'm also assuming you don't count the cost of food. You could probably walk, too, if you wanted. It's pretty amazing what can be accomplished with nothing but human power and some determination.