Congratulations Ogsarg. I just turned 62 been riding seriously roughly a year now. I had been registered for a very easy century, I registered last November, it was to be held two weeks ago but was put off not sure when it will be.
Anyway, I have been prepping all winter on a fluid trainer and Zwift. Since mid-November I've Zwifted 3000 miles and completed two virtual centuries, ridden up the Alpe 32 times (one day I did three Alpe runs) and completed all of the route badges. So I feel confident in a flat century but I really want to do one in real life just because. I'm sure I will get to it this summer.
Tomorrow I'm doing a 64 mile ride on hybred on a rail trail. It's funny because a year ago I would have been pacing the floor over this now it's just going out for a ride.