I average somewhere between 20-50 miles a week, varies greatly. Avg speed seems to be 15-17, but that is mostly on city streets, so lots of stop signs and lights. I have a 10 mile circuit I ride and on my 87 Bridgestone, I have been averaging right at about 17.5mph on my Bridgestone. The course has 6 stoplights and 9 stop-signs, things that slow the average.