Time was the issue back then. Very young baby made it impossible to go any further. Also I was working on slow rides to lose weight. Now I'm at my target weight (85kg) and working on endurance and speed. 100km is easy now. I can keep up a rapid pace for the whole thing. 120-130 its hurting, hitting 150-160 like I've been pushing for last few months and it REALLY hurts. But I have hope that it will become easier just as everything else has.
Actually a lot of the 60-90km rides were part of a longer ride as I hadn't figured out how to get enough power to the smart phone to stop it from dying at 100km.
For all the recorded data there is an average of 10% more riding that never got logged as it was just a pain to do so. I think that my days of road bike riding are over. As a kid I rode in the drops all the time but these days my back just doesn't like it. An mtb may be harder but its far more comfortable - at least for me.