I just turned 67, weigh 170 lbs. and stand 5'-9". This thread makes me feel a little better about myself. I still work 40+ hours a week so I am lucky to get in 1-2 rides a week. A long ride for me is 10-15 miles and on a 1-2% grade bike path my normal average speed is 10.5-12 MPH. I ride for pleasure, stress relief, and cardio. If I am lucky I pass 1-2 other bikers when I ride and I get passed by a lot of others. I'm sure my speed would increase if I got to ride more but I leave home 5:30 am and get home from work around 4:30-5. I have 1-2 meetings a week that prevent much riding during the week.