After proving to myself that I can do centuries, I don't do them anymore. I ride for fun, and the fun factor starts to fade around 50 miles. I can do more, and still do, but 50ish is a good number for me. Our club has a mileage prize for most miles ridden each month. They also require a metric century every month to qualify. I'm usually there on miles, at around 100 a week, but don't do the metrics, so I never win a prize. Just riding at 69 years old is prize enough.
Almost ...