When I was a teen-ager living in Long Island I once did the ultimate century -- from my house to Montauk Point and back in one day (I lived in Nassau County). The total mileage was 205 miles. I left at 5:10 a.m. and got back at 11:50 p.m. I think. No wild spreads of food and power drinks, but I did take four frozen PB&J sandwiches and stopped for breakfast at McDonalds, lunch at Montauk (french fries, as I recall), dinner of reheated pizza slices and a late-night snack of a bag of marshmallows. Also, I wore jeans shorts and rode in sneakers, and I brought a Walkman with amplified speakers which I had strapped to the bike (and wound up not using). Amazing what you can do when you're 17 and don't know any better.