I'm 61 and I've been invited to a century with 12,000 feet of climbing on the 22nd of this month. It's been a few years since I did that much climbing and at 205 pounds, it ain't easy.
Not much time to get ready, and my job wears me out when it's hot, but I might go and do a shortened version.

I hope to retire or at least work part time soon and if that happens I would like to train to do more long climbing rides, and even stay close to some of the good climbers.

For the past several years I have done a lot of fast club rides and they can be fun, especially if the right people are there, but sometimes the speeds are too high for me and I have more fun in the mountains.