If I pedal out to the mailbox and back I score it as a triple foot century. It's at least 150 feet to the mail box, one way. But since I stop to get the mail, can I really count it as a triple? Or is it 2 - 1 1/2's? My wife contends it is really just a double yard century. But I like using feet, it seems farther somehow. I will admit that it is a fairly easy run. Not too much climbing and I stay in shade most of the way.