It does take some training but it’s very doable. I know I did at least 3 last year at age 68 but it could have been more. The rides I remember were 125 miles, 137 miles plus a 160 miler. The 125 miler was with a small group but the other two were solo. From my experience if you can get comfortable doing 80 milers it’s not too big a deal to bump it up to 100+. I’m hoping to do a solo 200 miler from my house to the beach this year. Right now I’m behind my conditioning from last year but hopefully I can pick it up towards spring.
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Ride your Ride!!