Thanks for asking the question. I have been pondering the same question and thinking about posting, but knew my post would not have been as clear as yours. I try to ride every other day, of course life interferes some times. I started increasing my mileage in March, after a very long term medical issue, now resolved. I am now riding more most days than in almost any week over the past many years. I am trying not to do to much to soon as I learned my lessons many times over when younger and a runner. I alternate between a couple of routes that take over an hour and variations on those that take about two hours. I hope in a couple of months to bump my long rides up to say 3 hours. Who knows what will happen after that...