I have not used bicycle for last 15 years. Last weekend, I rode a new concept bicycle (named Dashbike). It pedals different way (two feet cycling in different direction, video at www.dashbike.com). I rode it in Silver Comet Trail near Atlanta for one hour and I finished 17.7 miles. Silver Comet Trail is a pretty flat road and I am an average bicylce rider 15 years ago. I forgot how fast I rode 15 years ago. Is anyone know what's average peoples' bike speed? Hope I am still in good shape after 15 years. Dashbike is a single speed bike.