Has anyone ever tried to calibrate the BikeForums average speed brag factor? That is, how much do you have to subtract from the average speeds quoted in your typical brag posting to get to the real numbers? I'm thinking we might have enough data here for a baseline. In my area a B pace group ride runs at 14+ mph, and an A pace ride runs 18+. So we're looking at a factor of 4 mph or so based on my local experience. Anyone else?