Turned 65 last month and began riding again 2 years ago after being away from bikes for 30 years (wife,kids,house.etc.)
My son who I ride with says after about 1/2 hour of riding or so I start to ride like I've never stopped. My 67 year old cousin says "you're too old to ride a motorcycle". I said "well I made it to your house and it's 70 miles from my place"!
Yes I am a bit stiff and sore after my rides ,but that's what hot showers and Alieve are for.
My son and I are planning a 300 mile over night trip this spring on our trusty Suzuki TU250's