Having just registered for another century race/ride in Huntsville, Alabama, I am left wondering about term “century.” When a runner registers for a marathon, he knows that he is set to run exactly 26 miles and 385 yards (42.195 kilometers). Now, when a cyclists registers for a century the number varies from 100.5 miles to as much as 108.7 miles (on the ones that I have ridden). Why is this? I’ve tried to do a “poor man’s” research on the history of century rides, but no dice. Any idea?