75 year old here. I ride 100% solo. Rode once a week with a club for many years in my fifties but had to take a year off of riding and never went back. Now I look at their site for rides to see if I want to join again and see that their rides are longer than my usual rides. I ride between 18 and 25 each outing and most of the club rides are in the 30 to 40 mile distance. Maybe next summer when I am 76. LOL