I've only started ridding a week I'm 50 years young . My first ride was only 8 miles and I literally made myself sick lol .I've aready changed my bike from a triban 3 to a triban 520 after only 3 days . and last night rode 33 miles. 100 appears to be a goal I may have to wait a long time to achieve. I'll keep going as long as it takes though
If that 8 miles was on that triban 3 you only had for 3 days, then done 30+ miles on your new one
?
I have been riding for years, my longest ride ever has only been 54 miles or so although I have done shorter hard ones. I do intend to increase my distances but not to 100 miles. But for me I dont really have any goals I want to achieve, just some improvements in general.
However I would say go for it, hopefully get it done by the end of the end of the summer before the rain gets cold. If I were to aim for a 100 miler I would procrastinate a bit longer and go for it next year, using this year to up my distances little by little.
EDIT: Im also a little over half your age!