Sunday went down to Key Biscayne and started a ride from Cape Florida State park across the causeway and took Miami avenue to Old Cutler and Old Cutler down to around 156th. Round trip this was 40mi and a very nice ride. Lot's of people out on bikes and climbing the causeway was almost like having a real hill. Old Cutler is two lanes and traffic started to pick up around 9:30a. I wouldn't start this ride much past 8:30a. The traffic for the most part was pretty polite but if you don't like two lane roads without shoulders you may not enjoy this ride.