I'm 67 and still cycling. I usually do 13-14.5 mph. Don't have the need for excessive speed. I just enjoy the ride. I have a herd of bicycles that I long to get down to just 4. Mostly are urban/city bikes but I also have a tourer and road bike [road bike has 700 x 28c tires for less road friction and higher level handlebars]. I don't ride in groups. I'm having fun and getting exercise and photographing where I ride.