I used to ride with the Charles River Wheelmen when I lived in Boston. I tried to bicycle to work when I moved to Southern NH and just found it too dangerous for my comfort level. The bridges were a big problem as crossing them meant that a driver had to stop for you and drivers are in too much of a hurry to stop for you - and, even if they did, they'd annoy the driver behind them.

Our former fitness center manager, a former national class cyclist, told me that the area where I live is not a great area for cycling - she cycles all over the place and knows the main roads well.

I prefer to run in housing developments or around shopping malls or strip malls just because people have to drive at lower speeds.