I try and keep my cadence between 80 and 100 when on my large ring and a little faster when on the middle ring. I have to admit, after riding on the trainer almost every day throughout the winter, I pretty much got a feel for what my cadence should be in relationship to the speed I'm going and now I hardly ever switch to the cadence mode. I know! You are going to tell me that it doesn't get cold enough in Florida to stop riding outdoors, but I was born and raised here and I live here because I don't take to the cold weather very well.