I am a relatively new rider who is just starting to get back into this. I bought a bike computer that has cadence. I rode a 33 mile ride the other day on relatively flat with a 2% grade here and there (The Silver Comet Trail near Atlanta, Georgia). On the ride I noticed that my best pace seems to be 70 to 80 rpm. I can go faster then that. In fact I had it up to 100 a few times. Bu it seemed that I could ride for long distances at that pace with little or no problem. In the gears that I was normally in this resulted in something like 15-18 miles an hour. I am riding for exercise and maybe a little light touring so I do not plan on being a speed demon or racer. But my question is this. Is something wrong with me? Should I be shooting for a 90 cadence like I keep on hearing about on this forum? Should I get a heart rate monitor to show that my cadence is enough or not enough? My average on this trip was only 12 miles per hour but there was a lot of areas where there was too much traffic to travel much faster then the walking groups.