Strava says I'm in the 11.5 mph range. I mostly ride to commute to work and to get groceries. I seem to be averaging about 17 mph on the streets. I take it real easy on the MUPs, which brings the overall average down quite a bit. I track my rides with Cyclemeter GPS mainly to see how many calories I burn, as well as general amusement. I don't take it too seriously.