I rode to the VA Medical Center (and back) for my semi-annual (fasting) blood test. It's 13.3 miles each direction: flat Florida terrain, one road all the way -- some sections with a "real" bike lane, others with what passes for a bike lane (road shoulder or whatever), and some where I "shared" the lane (double or single) with traffic. I left a little before 8AM, just as "rush hour" ended, and traffic was fine (amount and behavior). 1h:03m going, 1h:01 returning. People are always surprised that a 64 year-old guy does it car-free; I'm not surprised... they're almost all obese (and health-care workers, to boot). As they taught us in the US Army: "Lead by example!"