along these same lines, is it still a century if you, say, ride 50 0r 60 miles in the morning when it's cool. go home and laze around and then go back out in the early evening (when it's cool again!) and ride 40 or 50 more? or do most consider a true century a more or less continuous 100 mile ride?
cause that's more or less what i did yesterday on a fixed gear.